Approximately how long ago did our current era begin ? O A. 1 million years OB. 4.5 billion years C. 65 million yearsO O 100, 000 years

Answers

Answer 1

Answer:

C. 65 million years ago

Explanation:

The current locations of the continents and their modern day inhabitants, including humans, can be traced to this period.

Pls vote brainliest :)


Related Questions

______ means that the alleles in the genotype are different. A) Recessive
B) Homozygous C) Allelopathic D) Codominant E) Heterozygous

Answers

Answer:

B because homozygous is the alleles in the genotype

Explanation:

heterozygous is when the alleles are different

What part of the respiratory tract is considered the respiratory zone?
A. Bronchioles
B. Larynx
C. Trachea
D. Alveoli

Answers

Answer:

D. Alveoli

Explanation:

Functionally, the respiratory system is separated into a conducting zone and respiratory zone:

Conducting zone consists of the nose, pharynx, larynx, trachea, bronchi, and bronchioles. These structures form a continuous passageway for air to move in and out of the lungs.

Respiratory zone is found deep inside the lungs and is made up of the respiratory bronchioles, alveolar ducts, and alveoli. These thin-walled structures allow inhaled oxygen (O2) to diffuse into the lung capillaries in exchange for carbon dioxide (CO2).

The respiratory zone begins where the terminal bronchioles join a respiratory bronchiole, the smallest type of bronchiole, which then leads to an alveolar duct, opening into a cluster of alveoli.

Answer:

Yep, the correct answer is D.) Alveoli

Explanation:

Hope this helped you!Have a great day(:

Help with this question

Answers

Answer:

Formula

a^2 + b^2 = c^2

a = side of right triangle

b = side of right triangle

c = hypotenuse

Explanation:

PLEASE HELP Compounds that always contain the element carbon are called

Answers

I believe the answer is organic compound

Which of these is a function of the placenta?
A To deliver the blastocyst after childbirth
B. To carry nutrients to the cells of the uterus
C. To carry wastes away from the embryo
O D. To develop into fetal reproductive tissues

Answers

Answer:

c

Explanation:

What is currently happening with Mount Etna?

Answers

Answer:

As Italy’s National Institute of Geophysics and Volcanology (INGV) explains on a recent blog post, the nascent eruption began on the night of May 29. Starting off by producing a thick column of ash rising from the New Southeast Crater, it gave way on May 30 to a far more lava-heavy display in the area, featuring two fissures blenching out lava.

Answer:

There is currently no eruptive activity at the volcano involving fresh lava and monitoring signals do not suggest an immediate change likely; only a weak thermal anomaly continues to be present from the southeast crater complex.

Explanation:

What percent will have spots ?
25 %
0 %
50

Answers

About 50% will have spots

Alternate forms of a gene having the same position on a pair of chromosomes and affecting the same trait
are called ______. A) phenotypes B) alleles
C) DNA
D) mutations E) genotypes

Answers

Answer:

The answer is B) alleles

Explanation:

Alternate forms of a gene having the same position on a pair of chromosomes and affecting the same trait are called alleles.

What do you mean by traits?

Traits may be defined as the appearance or manifestation of the desired characters. Traits are also known as phenotypes.

Every factor or gene has two alternative copies, one comes from the father and one comes from the mother. These two copies are present in the same location on the homologous chromosome. They are known as alleles of each other.

Therefore, Alternate forms of a gene having the same position on a pair of chromosomes and affecting the same trait are called alleles.

To learn more about Alleles, refer to the link:

https://brainly.com/question/898077

What is source of the DNA for the strawberry plant?

It was absorbed from the soil
It was passed on from the parent plant
It was created by the plant using sunlight
It was borrowed from animals that feed on the plant

Answers

Answer:

passed on by parent plant

Explanation:

both parents dna are present half of fathers and half of mothers

B, it was passed on from the parent plant, because half of each parent plants dna makes up the plants own unique strands of dna. Sorry for being 2nd.. brainliest is appreciated!

What is a Schwarzchild radius and what does it have to do with a black hole

Answers

Answer:

The Schwarzschild radius (sometimes historically referred to as the gravitational radius) is a physical parameter that shows up in the Schwarzschild solution to Einstein's field equations, corresponding to the radius defining the event horizon of a Schwarzschild black hole

Explanation:

The Schwarzschild radius define the “size” of a black hole. Theorists believe that all the “stuff” inside a black hole collapses into a singularity, an infinitely small and infinitely dense point well inside the boundary defined by the Schwarzschild radius.

Hope it helps...Pls mark as Brainliest!!

Identify the disorders described. immune system overreacts to an antigen part of the immune system does not function properly the body's immune system attacks its healthy cells, mistaking them for pathogens masses of cells form and steal nutrients from healthy cells

Answers

Answer: 1: allergic disorders

2. Immunodeficiency disorders

3. Autoimmune disorders

4. Cancers

Immune system overreacts to an antigen part of the immune system does not function properly the body's immune system attacks its healthy cells, mistaking them for pathogens masses of cells form and steal nutrients from healthy.

What do you mean by Allergy?

Allergy may be defined as a reaction by our immune system to something that does not trouble most other people. It affects a person more specifically.

When a person gets affected by any allergy, the immune system of that person may overreact by producing more antibodies. These antibodies attack the allergen particles and cause adverse symptoms.

A person who has allergies has them because his or her body over reacts to a material that would otherwise be ignored. It is an overreaction of the immune system triggering a immune attack response that is unneeded.

Therefore, a person who has allergies has a compromised immune system because the body's immune system overreacts to an antigen.

Learn more about antigen on:

https://brainly.com/question/19793069

#SPJ2

Which of the following is always true of two organisms in
the same taxonomic class?

A.They can breed with one another

B.They have certain physical features in common

C.they evolved at the same time

D.they live in the same ecosystem​

Answers

Answer:

they can breed with one another, they have certain physical features in common, they evolved at the same rate, they live in the same ecosystem. Lions and house cats share common features, but cannot breed with one another.

Explanation:

They share a common ecology, they may breed with one another, share some physical characteristics, evolve at the same rate, and inhabit the same ecosystem, hence option D is correct.

What are the taxonomic classes?

If two species are members of the same class, they are also members of the same higher-level taxon. They share the same phylum and kingdom in this instance.

Kingdom, phylum or division, class, order, family, genus, and species are the seven main taxonomic ranks.

The taxon with the greatest number of species is the kingdom. In taxonomy, it is the broadest category into which the creatures can be divided.

The classification of five kingdoms was made by R.H. Whittaker. The kingdoms of Monera, Protista, Fungi, Plantae, and Animalia are included in this classification.

Therefore, option D is correct.

Learn more about a taxon, here;

https://brainly.com/question/21123501

#SPJ6

S-waves arrive at a seismic station?

First
Second
Third
Fourth

Answers

Answer:

First

Explanation:

S-waves arrive first at a seismic station

When iron in rocks reacts with oxygen, it
forms iron oxide (rust), which weakens
rocks and causes them to break apart.
This is an example of...

Answers

Answer:

Oxidation

Explanation:

(01.01 MC)

An idea is being proposed. The steps that led to the idea are listed below:

Only the favorable evidence were considered.
There was a review by the scientific community.
The outcomes were same each time.

Can this idea be scientific?

Yes, because the idea produced reliable results.
No, because it was not reviewed by family and friends.
Yes, because all steps of the scientific method were followed.
No, because conflicting evidence and arguments were not considered.

Answers

No, because conflicting evidence and arguments were not considered.

Give the person brainliest. i mean ik this was over a year ago but if u see dis, u can now give the person brainliest.

Kendra was removed from the voting committee for Homecoming King because one
of the nominees was her boyfriend. Why was she removed?
bias
stereotype
OOO
manipulation of information
vested interest

Answers

Answer:

Bias

Explanation:

definitely because she could have been biased

Mendel used more than 28,000 pea plants in his experiments. Why is it
important that he studied such a large sample of pea plants?

A. Having more samples gave him results that were closer to the
predicted ratios.

B. The pea plants were very inexpensive.

C. Using more plants made the experiments take less time.

D. Most pea plants die after producing seeds.

Answers

It is important that he studied a large amount because A: Having more samples having him results that were closer to the predicted ratios.

Carbon is an organic element found in all life forms. Which of the following
occurs through the process of breaking down carbon-based molecules?
Water molecules are transferred through the body.
Elimination of waste products occurs.
Energy needed for life functions is released
Absorbing of oxygen through pore occurs.

Answers

Answer:

The third option Energy for life functions is released

Explanation:

A mother has one allele for dimples and one allele for no dimples. How many
of her gametes will carry the allele for dimples?

A. 0%
B. 25%
C. 100%
D. 50%

Answers

I am pretty sure that the answer is D.) 50%

Answer:

50%, i believe

Explanation:

So the mother in the problem must have gotten her alleles from her mother and father. Who donated what we are not sure. All we know is that she got one allele for dimples and one allele for no dimples. These are part of the mother's somatic cell DNA. This DNA is duplicated during interphase, right before meiosis occurs as the mother begins to form her gametes, however.

Why is this statement not a hypothesis?
Sunflowers require soil and plenty of sunlight and water to grow and thrive.

Answers

a hypothesis tends to go like “if [action] then it should [desired result]” if that makes any sense.

So if that statement were reworded to a hypothesis it would be like “If sunflowers are planted in soil and given plenty of sunlight and water (action) it will grow and thrive (desired result).”

i have no idea if that made any sense but like thats the best way i can explain it

Answer:

It’s stating exactly what is going to happen with no guess and it’s not in an if,then format

What is the difference between weather and climate?

Answers

Weather relates to the short term natural occurrences (like rain, storms, sunshine, etc) while climate refers to the long term, general state of a biosphere (like the average temperatures in certain season, how much and how periodically in rains over a long period of time, etc)

Hope this helped.

What are cilia?
A. false feet
B. skinny tails
C. hairlike projections
D. temporary extensions

Answers

Answer:

c. hairlike projections

Explanation:

it sweeps mucous and dirt out if our lungs.

Hope this helps :)

Why is electroreception important to sharks?
O keeps predators away
O detects prey
O balance
O attracts mates​

Answers

Keeps predators away

After removing a cutting from a parent plant, farmers usually:

Answers

Answer:

Plant the cutting in a different location

Explanation:

A cutting is a piece of a plant that is usually cut by farmers during agricultural practices. It is a means of vegetative (asexual) propagation.

The part of the plant which is cut is usually the stem or root of the parent plant. The cutting is then placed in a favorable environment which is mostly moist soil for proper growth .

Name 5 Dinosaurs Related to Tyrannosaurus rex and Speed also Hight​

Answers

Answer: Spinosaurus Gigantosaurus Allosaurus Tyrannosaurs and Titanosaur.  PLEASE GIVE ME BRAINLIEST

Explanation:  Saurischian Height Length Weight

Acrocanthosaurus (top-spined lizard) 19 ft. 5.8 m 40 ft. 12.2 m 6,000lbs 2,722kg.

Albertosaurus (Alberta lizard) 15 ft. 4.6 m 30 ft. 9.1 m 6,000lbs 2,722kg.

Allosaurus (other lizard) 17 ft. 5.2 m 40 ft. 12.2 m 4,000lbs 1,814kg.

Apatosaurus (deceptive lizard) 15 ft. 4.5 m 75 ft. 22.9 m 66,000lbs 29,937kg.

Archaeopteryx (ancient wing) 1 ft. 0.3 m 3 ft. 0.9 m 2lbs 0.9 kg.

Argentinosaurus (Argentina lizard) 70 ft. 21.4 m 120 ft. 36.6 m 220,000lbs 99,792kg.

Baryonyx (heavy claws) 6 ft. 1.8 m 30 ft. 9.1 m 4,000lbs 1,814kg.

Brachiosaurus (arm lizard) 50 ft. 15.2 m 100 ft. 30.5 m 100,000lbs 45,360kg.

Ceratosaurus (horned lizard) 13 ft. 4.0 m 20 ft. 6.1 m 3,000lbs 1,361kg.

Coelophysis (hollow form) 3 ft. 0.9 m 9 ft. 2.7 m 100lbs 45.5kg.

Compsognathus (elegant jaw) 2 ft. 0.6 m 3 ft. 0.9 m 8lbs 3.6kg.

Deinonychus (terrible claw) 5 ft. 1.5 m 9 ft. 2.7 m 175lbs 80kg.

Diplodocus (double beam) 24 ft. 7.3 m 89 ft. 27.1 m 50,000lbs 22,680kg.

Dromiceiomimus (emu mimic) 5 ft. 1.5 m 11 ft. 3.4 m 220lbs 100kg.

Gallimimus (fowlmimic) 8 ft. 2.4 m 18 ft. 5.5 m 260lbs 118kg.

Mamenchisaurus (Mamenchi lizard) 35 ft. 10.7 m 69 ft. 21.0 m 60,000lbs 27,216kg.

Megalosaurus (big lizard) 12 ft. 3.7 m 26 ft. 7.9 m 2,000lbs 907kg.

Microvenator (small hunter) 2.5 ft0.8 m 4 ft. 1.2 m 14lbs 6.4kg.

Ornithomimus (bird mimic) 8 ft. 2.4 m 15 ft. 4.6 m 300lbs 136kg.

Oviraptor (egg robber) 3 ft. 0.9 m 5 ft. 1.5 m 80lbs 36kg.

Plateosaurus (flat lizard) 7 ft. 2.1 m 26 ft. 7.9 m 4,000lbs 1,814kg.

Saurornithoides (narrow-clawed lizard) 3 ft. 0.9 m 6.5 ft. 2.0 m 60lbs 27kg.

Seismosaurus (tremor lizard) 84 ft. 25.6 m 150 ft. 45.7 m 200,000lbs 90,720kg.

Spinosaurus (spiny lizard) 8 ft. 2.4 m 40 ft. 12.2 m 14,000lbs 6,350kg.

Supersaurus (super lizard) 66 ft. 20.1 m 100 ft. 30.5 m 120,000lbs .54,432kg.

Tyrannosaurus (tyrant lizard) 23 ft. 7.0 m 50 ft. 15.2 m 14,000lbs .6,350kg.

Ultrasauros (ultra lizard) 53 ft. 16.2 m 100 ft. 30.5 m 140,000lbs .63,504kg.

Velociraptor (swift robber) 2 ft. 0.6 m 6 ft. 1.8 m 250lbs .113kg.

   View printable version of table.

Ornithischian Height Length Weight

Ankylosaurus (armored lizard) 7 ft. 2.1 m 35 ft. 10.6 m 10,000lbs 4,536kg.

Camptosaurus (bent lizard) 10 ft. 3.0 m 23 ft. 7.0 m 4,000lbs 1,814kg.

Chasmosaurus (cleft lizard) 6 ft. 1.8 m 17 ft. 5.2 m 3,000lbs 1,361kg.

Claosaurus (broken lizard) 6 ft. 1.8 m 12 ft. 3.7 m 2,000lbs 907kg.

Corythosaurus (helmet lizard) 16 ft. 4.9 m 30 ft. 9.1 m 8,860lbs 4,019kg.

Dravidosaurus (Dravidanadu lizard) 4 ft. 1.2 m 10 ft. 3.0 m 2,000lbs 907kg.

Dryosaurus (oak lizard) 6 ft. 1.8 m 13 ft. 4.0 m 2,000lbs 907kg.

Euoplocephalus (well-armored head) 4 ft. 1.2 m 17 ft. 5.2 m 7,000lbs3,175kg.

Hadrosaurus (bulky lizard) 15 ft. 4.6 m 30 ft. 9.1 m 6,000lbs 2,722kg.

Hypsilophodon (high-crested tooth) 3 ft. 0.9 m 7.5 ft. 2.3 m 140lbs 64kg.

Iguanodon (iguana tooth) 18 ft. 5.5 m 30 ft. 9.1 m 10,000lbs 4,536kg.

Kentrosaurus (spiky lizard) 5 ft. 1.5 m 17 ft. 5.2 m 4,000lbs 1,814kg.

Lambeosaurus (Lamb's lizard) 18 ft. 5.5 m 30 ft. 9.1 m 14,000lbs 6,350kg.

Nodosaurus (node lizard) 6 ft. 1.8 m 18 ft. 5.5 m 6,000lbs 2,722kg.

Ouranosaurus (brave monitor lizard) 10 ft. 3.1 m 23 ft. 7.0 m 8,000lbs 3,629kg.

Pachycephalosaurus (thick-headedlizard) 10 ft. 3.1 m 18 ft. 5.5 m 4,000lbs 1,814kg.

Protoceratops (first horned face) 2 ft. 0.6 m 6 ft. 1.8 m 900lbs 408kg.

Shantungosaurus (Shanshan lizard) 25 ft. 7.6 m 51 ft. 15.5 m 14,000lbs 6,350kg.

Styracosaurus (spiked lizard) 7 ft. 2.1 m 17 ft. 5.2 m 6,000lbs 2,722kg.

Stegosaurus (plated lizard) 11 ft. 3.4 m 30 ft. 9.1 m 6,000lbs 2,722kg.

Tenontosaurus (tendon lizard) 10 ft. 3.0 m 23 ft. 7.0 m 4,000lbs 1,814kg.

Torosaurus (bull lizard) 7 ft. 2.1m 21 ft. 6.4 m 12,000lbs 5,443kg.

Triceratops (three-horned face) 9.5 ft. 2.9 m 26 ft. 7.9 m 14,000lbs 6,350kg.

The above answer is actually very incorrect as it names various species from various different groups and species.

When looking for related species to tyrannosaurus you should look under Tyrannosauridae to get an accurate answer.

Tyrannosaurs Rex - 40-42 ft long, 8.4-14 tons

1. Tarbosaurus - 33-39ft long, 4-5 metric tons

2. Albertosaurus - 30-32ft long, 4 tons

3. Gorgosaurus - 26-30ft, 2.8-2.9 tons

4. Daspletosaurus - 26-30ft, 2.5 tons

5.Zhuchengtyrannus - 33-39ft, 6 tons

Hope this helps. :)

what other animals benefit from eachother? this is a simbiotic relationship

Answers

Answer:

There is coral and algea.

Explanation:

Hey there!

An alligator and a bird have a symbiotic relationship called mutualism. The bird gets its food from the alligators teeth, while cleaning the alligators mouth.


Hope this helped!

1pt Which of the following life processes is not necessary for an individual organism to survive, but is necessary for the survival of the species?
A. digestion
B. respiration
C. regulation
D. reproduction

Answers

Answer:

D. reproduction

Explanation:

If the species doesn't reproduce they die out or become extinct.

The table below shows the average yearly temp at Ute in four locations near an ocean.

Location A —> 31
Location B —> 23
Location C —> 18
Location D —> 48
Average yearly temperature in four locations near an ocean.

At which location is the density most likely to be the greatest

Location A
Location B
Location C
Location D

Answers

/D/ if not might be B

Answer:

C

Explanation:

Assume that producers in an ecosystem have 1,000,000 kilocalories of energy. How much energy is available to primary
consumers?
5. Which trophic level has the greatest biomass?

Answers

Assuming that producers in an ecosystem have 1,000,000 kilocalories of energy, 100,000 Kilocalories of energy would be available to primary consumers.Producers is the trophic level with the greatest biomass

HOW IS ENERGY TRANSFERRED:In a food chain, energy is being transferred when one organism in a particular trophic level feeds on another organism in a lower trophic level.

The lowest trophic level contains the producers, which are organisms that start the food chain. However, only about 10% of energy is available to the organism in the next trophic level as 90% is lost as heat.

Therefore, according to this question, if it is assumed that that producers in an ecosystem have 1,000,000 kilocalories of energy; 10/100 × 1,000,000 = 100,000 kilocalories of energy will be available to primary consumers.

WHAT IS BIOMASS:The total biomass of an organism in each trophic level decreases going up. This is due to the lesser energy transferred from one trophic level to the next.

As the trophic level increases, lower energy is available to convert into biomass. Hence, the higher the trophic level, the lower the biomass.

Therefore, if this is the case, the producers at the first trophic level will contain the greatest biomass which will decrease as the food chain progresses upwards.

Learn more about biomass and energy at: https://brainly.com/question/1751953

PLZZZZZ HELPPP!!
Select the correct answer.
A force of 15 newtons is applied to both Object A with a mass of 25 kilograms and Object B with a mass of 50 kilograms. What is true about th
acceleration of Object A and Object B?
ОА
Acceleration of Object A is four times that of the acceleration of Object B.
OB.
Acceleration of Object A is the same as the acceleration of Object B.
Ос.
Acceleration of Object A is half the acceleration of Object B.
OD
Acceleration of Object A is twice that of the acceleration of Object B.

Answers

Answer:

B

Explanation:

i believe

Other Questions
why did the british meet with less opposition in the southern colonies What is the rank of Brazil. (Percentile wise) What does the expression n+3 represent?? Read the excerpt. Is it moving at a fast pace or a slow pace? Support your answer with details from the text.The sun rose over the ocean like it was stretching out its arms. The golden yellow filled the sky and reflected off of the water. Birds flew slowly in the air, enjoying the morning warmth before it became too hot. Traci tries to teach her younger sister how to draw a rectangle. Traci tells her." Draw a shape with four straight sides." Traci sister draws the shape shown. The drawing of the shape includes 4 straight sides, but it is not a rectangle. How can Traci make her directions more clear? If you start with 64g of a radioactive element how many half-lives would occur before 8g remain? 1.__________ are the most organized state of matter. Solids Liquids Gases2.States of matter change when ________ is added or removed. Plasma Energy3.Which state of matter has the most movement of its particles? Solid LiquidGas When a borrower receives something of value now and agrees to repay the lender at some date in the future, the borrower isAusing credit.saving moneygaining new incomemaking an investment. Dexter Industries purchased packaging equipment on January 8 for $116,600. The equipment was expected to have a useful life of three years, or 20,000 operating hours, and a residual value of $6,600. The equipment was used for 8,700 hours during Year 1, 7,380 hours in Year 2, and 3,920 hours in Year 3. Required: 1. Determine the amount of depreciation expense for the three years ended December 31 by (a) the straight-line method, (b) the units-of-activity method, and (c) the double-declining-balance method. Also determine the total depreciation expense for the three years by each method. (Note: For STRAIGHT-LINE ONLY, round the first two years to the nearest whole dollar, then round the third year as necessary. For DECLINING BALANCE ONLY, round the multiplier to five decimal places. Then round the answer for each year to the nearest whole dollar.) 2. What method yields the highest depreciation expense for Year 1 In which of the following years was Andrew Jackson elected president?A. 1776B. 1862C. 1800D. 1828 Examine the picture of an onion root tip with cells in various stages of the cell cycle. A student claims that interphase is the longest stage of the cell cycle. Another student claims that mitosis is the longest stage. Using evidence from the photo, determine which student is correct and why. A)Mitosis is the longest stage because anaphase requires more time to separate chromatids. B)Interphase is the longest stage because chromosomes are visible in the majority of the cells. C)Mitosis is the longest stage because the majority of the cells in the photo are replicating their DNA. D)Interphase is the longest stage because the majority of the cells in the photo have uncondensed chromatin and are not dividing. If p stands for "this meal is delicious Replicating the texture of shark skin to inhibit the ability of bacteria to attach to medical surface is an example of what application of biotechnologyA.Biochemical engineeringB. BiomimicryC. BioprospectingD. Environmental biotechnology Math question down below What is the range 0 -9 -9 -6 -4 -7 -5 -3 1. What ideas came from the Magna Carta?2. What ideas came from Thomas Paines Common Sense?3. What are the purposes of government? Hint: look at the Preamble.4. The 1st three articles of the Constitution describe the three branches of government and their powers. What are the three branches of government? What does eachdo? Who is in each? What is a drug?What is the difference between medicines and recreational drugs ?Give two examples of legal recreational drugs?Give two example of illegal (against the law) drugs?What is a depressant?Give two effects that a depressant drug has on the body.Give two long term effect of taking a depressant drug.What is a stimulant?Give one example of a legal stimulant and one example of an illegal stimulant.What are the effects of taking a stimulant? JUST NEED THIS LAST QUESTION!!! WILL GIVE BRAINLIEST!!! HELP ASAP!! SHARE YO SMARTNESS!!!1. Why were charters more successful at establishing settlements than Englands earlier attempts at colonization?A) They established laws that would make the colonies easier to control.B) They required all settlers to be financially well-off before leaving for America.C) They attracted merchants and noblemen who were eager to expand their wealth.D) They included restrictions on the number of people who could settle in an area. Felis concolor is a species of cat that expresses incomplete dominance in fur color. RR= white fur, rr= black fur, and Rr= grey fur. If you crossed a homozygous dominant male with a homozygous recessive female, what would the resulting genotype and phenotype be? What is the area of a rhombus if one diagonal is 6 centimeters and the other diagonal is 8 centimeters?