In 1980, scientists suggested that the great mass extinction of 65 million years ago (which ended the reign of dinosaurs) may have been caused by a large impact from space. What discovery gives a big boost to this idea

Answers

Answer 1

Answer: the discovery of a buried crater (about 200 km across) near Chicxulub, Mexico

Answer 2

The discovery of a buried crater (about 200 km across) near Chicxulub, Mexico.

What is extinction?

Extinction is defined as the disappearance of an organism or a group of organisms as a result of environmental factors or changes in the members' evolutionary processes.

It can also be defined as an evolutionary process that causes a species or population to go extinct.

When there are no longer any living members of a certain animal or plant species anywhere in the globe, the species has become extinct.

Generally speaking, species disappear for the following reasons:

Genetic and demographic phenomena.Habitat destruction in the wild.Species introduction that are invasive.Global warmingHunting and illicit trade.

Thus the discovery of a buried crater (about 200 km across) near Chicxulub, Mexico.

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Related Questions

A ball is launched from the ground with a horizontal speed of 30 m/s and a vertical speed of 30 m/s. What is the ball’s horizontal acceleration at the top of its trajectory?
A. 10 m/s/s
B. 30 m/s/s
C. 15 m/s/s
D. 0 m/s/s
The factor(s) that most affect the gravitational force between two objects are:
A. mass and distance
B. density and distance
C. mass and size
D. density and size
What comes out of the bottom of a space shuttle?
A. Lava
B. Hot gas
C. Plasma
D. Water
A 1,500 kg truck drives at 20 m/s. How much kinetic energy does it have?
A. 450,000 J
B. 3,000,000 J
C. 30,000 J
D. 300,000 J
A bicyclist moves at a constant speed of 4 m/s. How long it will take for the bicyclist to move 36 m?
A. 9 s
B. 18 s
C. 12 s
D. 6 s
Why is friction useful between your feet and the ground?
A. It's not useful
B. Wears away your sneakers
C. Slows you down
D. So you don't fall over
What is the unit for kinetic energy?
A. Kg
B. N
C. Joules
D. N/m
If Vector A is (6, 4) and Vector B is (-2, -1), what is the resultant?
A. (4,5)
B. (4,3)
C. (8,5)
D. (8,3)
Your initial speed is zero. If you increased your speed by 4 m/s after only 2 seconds and continue to accelerate at the same rate, what will your speed be after 10 seconds?
A. 30 m/s
B. 40 m/s
C. 10 m/s
D. 20 m/s
You cover 750 m in 25 seconds. What is your speed?
A. 25 m/s
B. 30 m/s
C. 35 m/s
D. 40 m/s
The same net force is applied to object A and object B. The observed accelerations of the two objects are not the same; object A has an acceleration three times that of object B. Which of the following is correct?
A. Object A has one-third the mass of object B.
B. Object A has three times the mass of object B.
C. Object A has more friction than object B.
D. Object A has a different, less streamlined shape than object B.
Is friction acting on a moving ship useful?
A. No
B. Yes
C. Not sure
D. Maybe
A 12 kg ball is held 2 m above the Earth. How much GPE does it have?
A. 24 J
B. Not enough info
C. 240 J
D. 144 J
A car travels south at 30 m/s for 5 minutes. What is its velocity?
A. 30 m/s South
B. 30 m/s
C. 300 m/s South
D. 300 m/s
An object maintains its state of motion because of
A. Inertia
B. Momentum
C. Force
D. Acceleration
If I double the spring constant of a spring, what happens to its EPE if stretched the same distance?
A. Halves
B. Disappears
C. Not enough info
D. Double
If I were to take a ball to the moon, where gravity is 1/6th that on the Earth, what will happen to its GPE if I hold it at the same height both places?
A. 1/6th as much
B. Disappear
C. Not enough info
D. 6 times as much
A 40 kg bike traveling down the road has a negative acceleration. What is true of the force?
A. It is positive
B. It is zero
C. It doesn't exist
D. It is negative
Forces that act together are called what type of pairs?
A. Left-right
B. Happy-sad
C. Action-reaction
D. Up-down
A satellite’s original velocity is 10,000 m/s. After 60 seconds it’s going 5,000 m/s. What is the acceleration?

A. -83 m/s2
B. -250 m/s2
C. 83 m/s2
D. 250 m/s2
If the sun were more massive, what would happen to Earth’s gravity with the sun?
A. increase
B. would be 0
C. would be infinite
D. decrease
The amount of matter in an object is called its
A. Force
B. Mass
C. Balance
D. Weight
An object with a mass of 15 kg has an acceleration of 4 m/s2, what is the resultant force?
A. 19 N
B. 3.75 N
C. 600 N
D. 60 N
How long does it take me to travel 500 m at a speed of 50 m/s?
A. 10 s
B. 25,000 s
C. 15 s
D. 2500 s

Answers

1. D
2. A
3.
4. D
5. A
6. C
7. C
8.
9.
10. B
11. B
12. B
13. C
14. B
15. A
16. D
17.
18. D
19. C
20. A
21. A
22. B
23.
24. A

describe the process of digestion in a person who had beans for lunch time​

Answers

Answer:

The processes of digestion include six activities: ingestion, propulsion, mechanical or physical digestion, chemical digestion, absorption, and defecation. The first of these processes, ingestion, refers to the entry of food into the alimentary canal through the mouth.

How does coronavirus causes severe pneumonia?

Answers

Answer:

please mark me brainliest

Explanation:

The new coronavirus causes severe inflammation in your lungs. It damages the cells and tissue that line the air sacs in your lungs. These sacs are where the oxygen you breathe is processed and delivered to your blood.

Answer:

The new coronavirus causes severe inflammation in your lungs. It damages the cells and tissue that line the air sacs in your lungs. These sacs are where the oxygen you breathe is processed and delivered to your blood. The damage causes tissue to break off and clog your lungs

Explanation:

Mark me as Brainliest

ayudaa por fa es para mañana
teniendo en cuenta la lectura uno de los métodos más rápidos económicos y eficaces para eliminar las bacterias del agua es la
A. desinfección
B. esterilización
C. cloración
D. inmunización

Answers

La respirate Es C. Cloración

how does the energy of the reactants and products differ between an energy absorbing reaction and an energy releasing reaction

Answers

In an energy absorbing reaction, the energy of the products is greater than the energy of the reactants. In an energy releasing reaction, the energy of the reactants is greater than the energy of the products.

The mass of the products is larger than the concentration of the reactants in an energy absorption process.

The power of the reaction mixture is larger than the radiation of the outputs in an energy-releasing process.

As substances disrupt bonds, energy released, and then when outputs make new bonds, release energy

Exothermic processes release energy, whereas endothermic reactions consume it. There is no general change in the quantity of energy throughout a chemical process, whether it collects or releases it.

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Diane Dodd raised different fruit fly populations on different food sources. She found that after about 40 generations the evolution of reproductive isolation was under way. The mechanism of evolution responsible for this was Group of answer choices

Answers

Answer:

Natural selection.

Explanation:

Natural selection can be defined as a biological process in which species of living organisms having certain traits that enable them to adapt to environmental factors such as predators, competition for food, climate change, sex mates, etc., tend to survive and reproduce, as well as passing on their genes to subsequent generations.

Simply stated, natural selection entails the survival of the fittest. Therefore, the species that are able to adapt to the environment will increase in number while the ones who can't adapt will die and go into extinction.

In this scenario, the mechanism of evolution responsible for this was natural selection because after about 40 generations the evolution of reproductive isolation was under way for the fruit fly. Thus, the more the offsprings that are reproduced by the parent organism, the more likely are they to survive.

Additionally, there is a better chance of having good or beneficial traits being passed from the parent organism to her offsprings.

Identify the correct bonding between nitrogen bases in DNA molecule from given pair.

a. A=C
b. A=G
c. A=U
d. A=T​

Answers

Answer:

It's not A or B. I hope that helps you a bit.

Explanation:

Answer:

A=T is the correct bonding between nitrogen bases in DNA molecule

help can be needed please!

Answers

The correct answer is A. Plastic trash in the neighborhood park.

Explanation

The tragedy of the commons was a term used by Garrett Hardin to describe a situation in which several individuals motivated by personal interests destroy or undermine a common good even though none of them is convenient for this. Outcome. According to the above, the correct answer is A. "Plastic trash in the neighborhood park", because this describes the result of an individual action of several people, which is to throw garbage in the park and that as a result causes general damage in the community.

3. What is one thing that can be done to help improve areas that produce a lot of runoff?

Answers

Answer: hi, im here to help :3

so, you can either use plants, use pesticides and fertilizers less often or the one thing i know is consider a rain barrel.

Dental plaque Group of answer choices anchors teeth to their bony sockets. is calcified organic matter on the surface of teeth. protects teeth from bacteria-induced tooth decay. forms a bone-like protective layer. consists of food particles trapped in a sticky matrix.

Answers

Explanation:

dental plaque consists of food particles trapped in a sticky matrix.

I hope this helps

Name the electrolyte in the electrolysis of sodium chloride solution​

Answers

Answer:

Sodium metal and chlorine gas can be obtained with the electrolysis of molten sodium chloride. Electrolysis of aqueous sodium chloride yields hydrogen and chlorine, with aqueous sodium hydroxide remaining in solution.

Answer:

Molten sodium chloride

Cathode: Na+(aq) +e ….>Na(s)

Anode: 2Cl-(aq) +2e…..>Cl2(g)

Sodium chloride solution.

Cathode: 2H-(aq) + 2e…>H2(g)

Anode:4OH-(aq)…>2H2O(l)+O2(g)

11. Choose the best answer.
A spore is a reproductive structure that contains a haploid cell and
a food supply
a style
a protective coating
a diploid cell

Answers

a protective coating. spores do not have stored food supplies, they are a haploid cell

explain the systemic circulation ​

Answers

Explanation:

Systemic circulation is also called general circulation in these circulation the oxygenated blood from the aorta moves towards the whole body (to each and every organ).

The aorta is divided into ascending and descending aorta. The ascending aorta supplies oxygenated blood to ascending or upper body parts and descending aorta supplies oxygenated blood to descending or downward body parts.

Hope it helps you! \(^ᴥ^)/

Does skeletal connective tissue have nucleus?

Answers

Answer:

Fibroblasts are the most common cell type of connective tissue. They produce both fibers and amorphous ground substance. Typically only the oval nuclei are visible. ... In the tendon, fibroblasts are seen as elongate nuclei found sandwiched between collagen fibers .

Why could the change in the tilt of Earth cause temperatures on
Earth to change?

Answers

The change in the tilt of the Earth can affect the distribution of sunlight and thus influence temperatures on Earth.

Earth's tilt and temperature

The tilt of the Earth, known as obliquity, affects the distribution of sunlight and influences temperatures.

A greater tilt leads to more pronounced seasons, with hotter summers and colder winters, while a lesser tilt reduces the seasonal contrast. These changes occur over long timescales.

However, short-term climate variations are primarily influenced by factors like greenhouse gases, ocean currents, and atmospheric circulation patterns.

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HELP
In humans, ventilation, digestion, and blood flow are important biological processes. Explain the relationship between the structure of tissues or organs and one of these processes.

Answers

Answer:

I am assuming the question is asking how do the processes relate to one another.

Explanation:

Ventilation happens in the lungs, where carbon dioxide and oxygen are exchanged in the alveoli. This is done via cappilaries that surround the alveoli. Cappilaries are small blood vessels, which are collecitelvy part of the blood flow system (circulation) of the body. In reguards to the digestion, there are capillaries in the vili (which are tiny finger-like structures) so that they can pick up the nutrients during digestion. Another way blood flow and digestion are connected is because the stomach is a muscle, thus is moves and requires energy. That energy comes from the oxygen and nutrients that is supplied by the blood. These are just some examples.

Which of the following statements is NOT true?
A. Mutations can be harmful.
B. Mutations are important to evolution.
C. Mutations can be beneficial.
D. Mutations are not part of evolution

Answers

Probably the fact that mutations are not a part of evolution because sometimes adaptions in a population happen because of mutations
The amswer is D because mutations are essential to evolution. Every genetic feature was initially the result of mutation .

D is wrong what is the right answer

Answers

Answer:

B. As hot air rises, water vapor is released

Step-by-step explanation:

That’s the process of evaporation. It’s starts as the sun trying to evaporate the water causing the water to become vapor all the way into the clouds

do you think that the life of elderly people suffering from diabetes mellitus should be extended by giving them artificially produced insulin​

Answers

Explanation:

The prevalence of type 2 diabetes is increasing among older adults as is their diabetes-related mortality rate. Studies suggest that tighter glucose control reduces complications in elderly patients. However, too low a glycosylated hemoglobin (HbA1c) value is associated with increased hypoglycemia. Moreover, the appropriateness of most clinical trial data and standards of care related to diabetes management in elderly patients is questionable given their heterogeneity. Having guidelines to safely achieve glycemic control in elderly patients is crucial. One of the biggest challenges in achieving tighter control is predicting when peak insulin action will occur. The clinician’s options have increased with new insulin analogs that physiologically match the insulin peaks of the normal glycemic state, enabling patients to achieve the tighter diabetes control in a potentially safer way. We discuss the function of insulin in managing diabetes and how the new insulin analogs modify that state. We offer some practical considerations for individualizing treatment for elderly patients with diabetes, including how to incorporate these agents into current regimens using several methods to help match carbohydrate intake with insulin requirements. Summarizing guidelines that focus on elderly patients hopefully will help reduce crises and complications in this growing segment of the population.

Write the different function of different type of teeth.​

Answers

Answer:

to help break down food.

help in digestion due to enzymes.

they help break down food

hey guys
Pls answer ⤵️
write short note on IVF ​

Answers

Answer:

In vitro fertilization (IVF) is a type of assistive reproductive technology (ART). It involves retrieving eggs from a woman's ovaries and fertilizing them with sperm. This fertilized egg is known as an embryo. The embryo can then be frozen for storage or transferred to a woman's uterus.

Answer:

IVF YOU MEAN 4 F?????????

Where is amyglada located in a brain ? How does it function ?​

Answers

Short Answer: The amygdala is located in the brain and its functions are related to emotional learning.

Explanation

The amygdala is a brain structure located in the temporal lobe of the brain. Its functions are related to the emotional system of the brain, and memory. In addition, the amygdala has been shown to influence the emotional learning process. The amygdala is mainly responsible for the formation and storage of memories associated with emotional events, so external sensory stimuli reach the basolateral group of the amygdala, where associations are formed with memories of the stimulus (mainly related to fear).

InformationHow did
the discovery of isotopes disprove one part of
Dalton's atomic theory

Answers

Answer: Because Daltons theory states all atoms of a given element are identical in mass and properties.

Explanation:

The discovery of isotopes demonstrated that atoms of the same element can have different atomic weights, implying that atoms of the same element are not identical in every way. 

What is Dalton's atomic theory?

Dalton's atomic theory postulated that matter is made up of indivisible particles known as atoms, and that atoms of the same element are all identical and cannot be created or destroyed.

Compounds are formed by the simple combination of atoms into compound atoms.

Dalton, John Experiments with gases became possible at the turn of the nineteenth century, prompting John Dalton to propose a modern theory of the atom based on certain assumptions.

Dalton's theory is debunked. This is because Dalton's theory states that all matter is made up of identical, indivisible, and indestructible atoms. Isotopes have the same element but a different number of neutrons.

Thus, this way, the discovery of isotopes disprove one part of Dalton's atomic theory.

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Choices:

Why are reflex actions rapid and automatic? *

1. They do not go to the brain.
2. They do not go to the spinal cord.
3. They involve the conscious part of the brain.
4. They do not involve the conscious part of the brain.

Answers

Answer:

4. They do not involve the conscious part of the brain.

Explanation:

A reflex action follows this general sequence and does not involve the conscious part of the brain. 

Los hámsteres tienen 22 cromosomas y sus células haploides. ¿Cuántos cromosomas hay en su célula diploide heredera?

Answers

Answer:

El  hámster Sirio posee 44 cromosomas (22 pares de cromosomas) en sus células somáticas diploides, mientras que el hámster chino posee 22 cromosomas (11 pares de cromosomas) en sus células somáticas diploides

Explanation:

Un individuo es haploide (n) cuando sólo posee un juego de cromosomas en el núcleo celular, mientras que un individuo es diploide (2n) cuando posee dos juegos de cromosomas. En general, los organismos pluricelulares diploides poseen dos tipos tipos de células: 1-germinales (gametos) haploides y 2-células somáticas diploides. El hámster Sirio posee 22 pares de cromosomas, es decir 44 cromosomas (2n=44) en sus células somáticas diploides y 22 cromosomas en sus células germinales haploides, es decir, en sus óvulos (gametos femeninos) o espermatozoides (gametos masculinos) cuya fusión durante el proceso de fertilización da lugar a un cigoto diploide. Por otra parte, el hámster Chino, el cual se considera un organismo modelo en citogenética, posee 22 cromosomas en sus células diploides (2n=22) y 11 cromosomas (n=11) en sus células haploides.

Lactase is a human enzyme that catalyses the breakdown of lactose in milk.
At which temperature does lactase work faster?
A 0°C
B 18°C
C 37°C
D 100°C​

Answers

Answer:

Maybe 37°C

Explanation:

Because at 100°C enzyme gets denatured so maybe its 37°C .

I hope it's Right if not then advance sorry :)

which compound will be the first to contain the c14 in light independent phase of photosynthesis ​

Answers

Answer:

The Calvin cycle, light-independent reactions, bio synthetic phase, dark reactions, or photosynthetic carbon reduction (PCR) cycle of photosynthesis are the ...

Competitive divers pull their limbs in and curl up their bodies when they do flips. Just before entering the water, they fully extend their limbs to enter straight down. Explain the effect of both actions on their angular velocities. Also explain the effect on their angular momenta.

Answers

Answer:

whats an angular momenta ?

Explanation:

Các tuyến nào sau đây được gọi là các tuyến pha?

Answers

Answer:

tuyến tụy, tuyến sinh dục

Explanation:

escribe las clases de tejido parenquimatoso y la función de cada uno

Answers

Answer:Parénquima vascular: protege los tejidos conductores (xilema y floema) de la planta. Parénquima de relleno: ocupa el resto del espacio, con el fin de "rellenar". La principal característica es que las células son más o menos isodiamétricas (poseen el mismo diámetro).

Explanation:

Other Questions
1. A week after returning from a backpacking trip, four teenagers developed nausea and severe diarrhea. All had consumed untreated water from a stream which doctors concluded was infested with the organism, Giardia. Think about the symbiotic relationships that you studied in this unit. What type of relationship exists between the teens and the organism?2. As humans burn fossil fuels for energy, the percent of carbon stored in fossils is reduced while the carbon in the atmosphere is increased. If green plants are also being removed, how might the carbon cycle and greenhouse effect be influenced?3. How are decomposers critical to the carbon cycle? Choose the correct answer from the given four options: In an AP, if d = 4, n = 7, an = 4, then a is*620728 J. J. Abrams was born in NewYorkCityin 1966. Growing up, Abrams lovedmysteries and magictricks-anything that was unexpected. His favorite movies and television programs were science fictionones like The Twilight Zone. When he was 11 or 12, Abrams' grandfather gave him a movie camera called a Super 8. He used the camera to make short movies with his sister and their friends. From then on, Abrams' ambition was to work in Hollywoodand make movies and TVshows. He soon got his 10 first opportunity at 16 years old,when he wrote music for a movie called Nightbeast. In college, Abrams co-wrote and sold a screenplay to a Hollywoodproduction company. He started gaining popularity for his work, and his next two dramas-Regarding Henry and Forever 15 Young-were hit movies. Abrams continued to write and produce screenplays throughout his 20s, the biggest being Armageddon. But Abrams never lost his passion for the mysterious and wanted to create shows like the ones he enjoyed as a child. His next move was into television in 1998, when he helped create the popular TVseries Felicity. Some of his shows became huge hits, 20 like the spy drama Alias and the Emmy-winningmystery thriller Lost. Abrams made his movie directing debut almost a decade later in 2006, with Mission: Impossible III. He then went on to direct the science fictionmovie Star Trek in 2009. His movie success caught the attention of top filmmaker Steven Spielberg.Together,they created the monster movie Super 8, named for the camera both men experimented with when 25 they were young. The Super 8 camera has proved to be very influential in Abrams' life, but there is another special gift that has helpedAbrams becomewho he is today.Notlongafter the camera, Abrams' grandfather gave him a box of magictricks. Abrams calls it a "mystery box,"because he never opened it. He says he wants to preserve the mystery, and remind 30 himself to create unexpected stories. Tohim, the box "represents infinitel possibility. It represents hope. It represents potential." Abrams has even used the box metaphor to describe movie theaters. "What's a bigger mystery box than a movie theater? Yougoto the theater, you're just so excited to see anything ...mystery boxes are everywhere in what I do."The box remains a source of 35 inspiration for Abrams, and he keeps it on a shelf in his office. At a dinner party in 1994, Abrams met a woman named Katie McGrath and they got married soon after. Today,the couple and their three children live near LosAngeles, California, where Abrams runs his own production company called Bad Robot.He keeps busy, usually working on many projects at once,and is always lookingto create 40 more and more mystery boxes. Read the following sentences. Write true (T) or false (F). 1 F.Abrams mostly wrote screenplays in his 20s. 2 .Abrams compares the movie theater to his Super 8 camera. 3 .Steven Spielberg has worked with Abrams since Abrams' television days. 4 .Abrams works for his wife's production company, Bad Robot. 5 .Abrams likes to work on more than one project at a time. If the premiums are not paid on a Traditional Whole Life policy that has been in force for decades with no loan outstanding, what happens if A={1,2,3} and B={a,b,c} find AB and BA. Also show both of them in arrow diagram. I need for exam find the distance between the points (7,23) and (3,-3), rounded to the hundredths place Read the excerpt from The Odyssey.Now Zeus the lord of cloud roused in the northa storm against the ships, and driving veilsof squall moved down like night on land and sea.The bows went plunging at the gust; sailscracked and lashed out strips in the big wind.We saw death in that fury, dropped the yards,unshipped the oars, and pulled for the nearest lee:then two long days and nights we lay offshoreworn out and sick at heart, tasting our grief,until a third Dawn came with ringlets shining.Which key details should be included in a paraphrase of this passage? Check all that apply.The storm was a direct result of Zeuss fury at the men. For two days and nights, Zeus created a storm at sea.Odysseus and his men feared greatly for their lives.The sails on the ship cracked in the heavy winds.The men felt grief as they lay offshore and waited Please write out, step-by-step, how you obtained the correct answer for this math problem.Jose and Zola want to purchase their first home. Jose makes $23.50 an hour and works 40 hours per week. Zola makes $21.50 an hour and works 40 hours of regular time and 5 hours of overtime a week. They have two car payments totaling $500 a month and one credit card with a minimum payment of $50 a month. What is their combined gross monthly income?(HINT: Remember to assume that overtime is always time and a half unless otherwise specified!!) In lines 15 and 16, Shelley compares the wind's moving the clouds across the sky to the wind'sboth of the above answersblowing the snow across a fielddriving the dead leaves across the earth Why do Christians perform drama ? pls help me expand this expression 3. Find the products using suitable identity:a) (t 2)(t 2) b) (3y 2z) (3y + 2z) c) 105 98v Two pendulums have the same dimensions (length {L}) and total mass (m). Pendulum A is a very small ball swinging at the end of a uniform massless bar. In pendulum B, half the mass is in the ball and half is in the uniform bar.1. Find the period of pendulum A for small oscillations.2. Find the period of pendulum B for small oscillations. can I play the game the last of us with this spec: Where does the graph of f(x)=2-x+2 start?A. (2,0)B. (2,0)C. (0,2)D. (0,2) A rectangular lawn is 15 yards by 26 yards. It would cost $9.00 per yard to install a fence around the lawn. How much would it cost to put a fence around the lawn? What is the general function of enzymes in the human body?O A. They make fatty acids unsaturated.OB. They speed up chemical reactions.O C. They store genetic information.D. They carry instructions for making proteins. Could anyone help me solve for x? I've tried multiple times and can't seem to get the answer that was given Is (-4, 2) a solution of 4x + 5y (URGENT!) Which of these graphs best models the waves in the four locations?(100 points)