Question 9
After 60 days, 100g of a certain element has decayed to only 12.5g.
What is the half-life of this element?
A.) 20 days
B.) 30 days
с.) 8 days
D.)5 days
What are the two functions of the nervous system? *
A. Provides stucture and protection
B. Sends and recieves signals throughout the body
C. Obtain nutrients and removes waste produced by the body
D. Regulates body temperature and protects the body from damage
Help please
Answer:
B. Sends and receives signals throughout the body.
Answer:
sends and receives signals throughout the body
hope it helps
Scott was looking at the results of a cross between red and white flowers. Which is the most likely result of a cross that demonstrates incomplete dominance?
Answer:50 red flowers
Explanation:
Which of the following best describes a process by which metamorphic rock becomes igneous rock
A.weathering into sediments, then eroding
B.compacting under pressure and cementing
C.changing shape under heat and pressure
D.melting completely, then cooling
Why does the sun appear brighter than the other stars in the universe
Answer:
because its closer and bigger
Explanation:
its just closer and bigger than all of the other stars
If the individuals at Level IV - 1 and 2 had offspring, what do we know
could happen?
Answer:
all their kids might have the disease
Explanation:
if you do a Punnett square for the gene Xx X for female and X Y for male, then there is a 50 percent chance their kids would have the disease
where can you get information about endangered species?
Answer:
The National Wildlife Federation
Explanation:
I think this is where you can learn about endangered species.
Hope this helps!
hey besties if you would help me with these questions i think i can finally get myself to fully understand and do the rest of the assignment lol (its very late lol and i’m so close to just giving up)
1. explain how body plan and anatomy enables invertebrate to perform essential functions it needs to survive.
2. explain how body plan and anatomy enables chordate to perform essential functions it needs to survive.
3. explain how body plan and anatomy enables primate to perform essential functions it needs to survive.
Answer:
1)Invertebrates are known as creatures that do not have backbones. Even though these creatures do not have backbones, they have been uniquely designed in order to survive. According to studies, most of these creatures are found in the sea and one of them is the Star Fish or also called as the Sea Star. Starfish's functions and ability to survive is not the same like other animals which make them unique in a different way. The starfish's body is hard and bony for protection purposes and they exist in a variety of colors for camouflage. Their essential functions in order to survive are as follows:
-The Ability to Regenerate: Starfishes have the ability to grow damaged and lost limbs or even their entire body as long as the center part is still present and intact. And this is their way of reproduction as well.
-Having Tube Feet: Its arms are covered with a suction-like tiny cups of tube feet. This unique design of the starfishes enables them to move and secure themselves, especially on rocks and ocean floors.
-Unique Feeding Ability: Sea Stars don't have mouths nor teeth to ingest food. Rather, these creatures have the ability to push open or turn their stomachs out and digest its food. After digestion, their stomachs retract back to their bodies.
-Vascular System: How starfishes survive does not rely on having hearts, brains and blood. Rather, they use the seawater. The seawater serves as the one the circulates inside the sea stars' bodies and this is when nutrients and oxygen are being transported and absorbed.
2)Keep in mind invertebrates are those who have exoskeletons (outside skeleton) or are hydrostatic (no skeleton). This make up 95% of all animals for example an ant or sponge. For a sponge, all it has is tissues that enable it to allow water to flow out the tops.
Chordata are anything with vertebrates so a simple fish could suffice. THEY HAVE 4 SPECIFIC CHARACTERISTICS: 1.Notochord 2.Dorsal, hollow nerve cord 3.Pharyngeal slits 4.Muscual, an.al tail
This is us, we have thumbs, and vertebrates.
3)The bipedalism of primates puts their heads on a higher elevation and this allows them to see predators or prey from afar hence giving them advantage. Opposable thumbs on the hand and feet allow primates to grasp and handle objects effectively hence are able to make use of tools for hunting and etcetera
Explanation:
Which statement about how geologists study the ages of rock layers is true?
The law of superposition means that older rocks are on top.
Geologists can find the exact age of a rock by looking at its relative position.
The principle of original horizontality provides the basis for the law of superposition.
Relative age can be determined by using the concept of unconformity.
Answer: The principle of original horizontality provides the basis for the law of superposition.
Explanation:
The law of superposition in geology suggests that the rocks or sediments which are newly formed due to erosion and sedimentation of the original rocks lie above the old material. This law is supported by the principle of original horizontality according to which the newly formed sediments suspend horizontally in the layers of rocks and sediments under the effect of gravity. Thus an horizontal strata distinguishes the old and the new material.
Answer:
c
Explanation:
I took the quiz and got it right
In the 19th century, the agricultural revolution increased food production while the industrial revolution improved methods of
transporting food and other good additionally, advances in medicine, sanitation and nutrition have decreased the death rates further.
These factors combined to produce the rapid growth of the human population today. Yet other factors impact population demographics:
they include economic, political, religious conditions as well as resource availability.
Consider the demographics for two countries: one with a low-income, almost impoverished population; they other an economically well-off
country. What factors listed would contribute to the decline in birth rate and the larger +75 population in the high income country? Check all
that might apply.
Females have access to educational resources
Better nutrition: increased food supplies and distribution
There has been widespread emigration during the last few decades
Inadequate health care for women during pregnancy and for their babies after birth
A high incidence of infectious disease
Good sanitation and personal hygiene
Answer:
A Low Income Impoverished Population could be Uganda and a Economic Well off country could be the Netherlands
Explanation:
What is the relationship between atmospheric pressure and the density of gas particles in an area of decreasing pressure? O As air pressure in an area decreases, the density of the gas particles in that area decreases. O As air pressure in an area decreases, the density of the gas particles in that area increases. O As air pressure in an area decreases, the density of the gas particles in that area remains constant. O As air pressure in an area decreases, the density of the gas particles in that area increases and decreases in an alternating pattern.
Answer:
As air pressure decreases so does density of gas particles
Explanation:
How do viruses reproduce during the lysogenic cycle?
Can someone help me
What are the characteristics of sodium?
Answer:
it is a soft metal
it react In a low melting point with a relative density
it is luster
it is of silver and white colour
it have ductility
write two examples of consumers tell whether they are herbivores omnivores carnivors or scavengers
Answers
Lion,Tiger -Carnivores
vulture- scavenger
Cow,sheep -Herbivores
Man, Pig -Omnivores
In an ecosystem, consumers are organisms that obtain their energy and nutrients by feeding on other organisms. They are a vital part of the food chain, and they come in different sizes and types.
Consumers can be classified into several categories based on what they eat. For example:
Herbivores: These are animals that consume only plants for their food. Examples include rabbits, cows, and giraffes.Carnivores: These are animals that consume other animals for their food. Examples include lions, tigers, and sharks.Omnivores: These are animals that eat both plants and animals. Examples include humans, bears, and raccoons.Scavengers: These are animals that feed on the remains of dead organisms. Examples include vultures, hyenas, and some types of beetles.Consumers play an important role in an ecosystem, as they help to transfer energy and nutrients from one level of the food chain to another. They are an integral part of maintaining the balance and stability of an ecosystem.
Learn more abut consumers, here:
https://brainly.com/question/15869639
#SPJ5
HELP!!!! 50PTS!!! AND WILL BE MARKED BRAINLIEST!!!!
Based on the information in the data table and the cladogram shown below, which of the following best describes the evolutionary history of lizards? (4 points)
Amniotic membrane Bipedal locomotion Hair Jaws Lack of tail Lungs
Gorilla X X X X X X
Human X X X X X X
Lamprey
Leopard X X X X X
Lizard X X X
Salamander X X
Shark X
Image depicts a cladogram with lamprey, shark, salamander, lizard, leopard, gorilla, and human represented. Shark diverges from lamprey with the introduction of jaws. Salamander diverges from shark with the introduction of lungs. Lizard diverges from salamander with the introduction of amniotic membrane. Leopard diverges from lizard with the introduction of hair. Gorilla diverges from leopard with the absence of a tail. Human diverges from gorilla with bipedal locomotion.
They are more closely related to lampreys than they are to leopards.
They evolved into a separate species as a result of the presence of an amniotic membrane.
They have jaws and lungs but lack an amniotic membrane.
They share a more recent common evolutionary ancestor with salamanders than they do with sharks. I think is D
Answer:
D. They share a more recent common evolutionary ancestor with salamanders than they do with sharks.
Explanation: Just took the test and got it correct
The cladogram shows that lizards share a more recent common evolutionary ancestor with salamanders than they do with sharks.
What is cladogram?A cladogram is a diagram in the form of a tree wgich shows the evolutionary relationship between organisms based on similarities shared in structure or function.
The cladogram given show that sharks, lizards and salamanders have a common origin but that Lizard diverges from salamander with the introduction of amniotic membrane.
Therefore, Lizards share a more recent common evolutionary ancestor with salamanders than they do with sharks.
Learn more about cladogram at: https://brainly.com/question/12275760
Many paleontologists hypothesize that present-day whales evolved from ancient ancestors that had four legs and walked on land. Evidence for that
hypothesis would be a sequence of whale-like fossils
A. in which the oldest fossils had flipperlike appendages and the most recent fossil had four limbs.
B. in which the oldest fossil had four limbs and the most recent fossil had flipperlike appendages.
C. that indicate that the ancestors of present-day whales were wiped out during a mass extinction.
D. that indicate that whales evolved before animals with four legs.
Answer:
B
Explanation:
If the oldest fossils showed legs and the more recent ones had only flippers, it would show the change over time.
Meiosis occurs in male-female reproduction.
True or false?
Answer:true
Explanation:
Both males and females use meiosis to produce their gametes, although there are some key differences between the sexes at certain stages. In females, the process of meiosis is called oogenesis, since it produces oocytes and ultimately yields mature ova(eggs).
How can scientific conclusions be reliable, but also able to be changed with the introduction of new evidence
Answer:
scientific conclusions are reliable as they are helpful for many things however it is true that after the evolution of new ideas the old theory have some changes or may change fully or may be proved wrong but yeah the old theories are still helpful for many reasons and things.
so I think scientific conclusions are reliable
HELP OUT PLEASE!!!!
Earn 15 point
THANKS -
is it wrong for parents to give female hormone pills to there little sons, without there consent?
what is an example of simple sugar
Answer:
fructoseglucosegalactoseExplanation:
Simple sugars are carbs with one (monosaccharide) or two (disaccharide) sugar molecules.
They are commonly found in nutritious whole fruits, syrups, and honey.
Color blindness in humans is a sex linked trait. If the father has normal vision (XcY), and the mother is a carrier for the color blindness trait (Xc Xc), which percentage represents the chances of their sons being color blind?
A) 25%
B) 50%
C) 75%
D) 100%
HELP MEE
Its about bio and its confusing
Answer:
a) the process of mitosis generates new cells that are genetically identical to each other. mitosis helps organisms grow in size and repair damaged tissue. some species of alge are capable of growing very quickly.
b) more growth occurs in the root tips and very little new cell development occurs in woody stems after they are formed
c) sequential order means put things in order.
A B C D E
Hello again, Bakere!
a) Mitosis, the dividing of a single cell into two daughter cells, is a way for the plant to stay healthy-looking and strong. All cells die eventually, and they must be replaced by new, fresh ones. This replacement occurs through mitosis. Mitosis also allows the plant to grow, as mitosis is found more frequently in growing areas than ones that are finished growing. Since mitosis makes more cells, you will find much more mitosis occurring in a new shoot than in an old tree, because the old tree doesn't need a bunch of new cells to continue growing.
b) Mitosis is more frequent on the outside of the root because new cells are needed constantly as multitudes of them are scrubbed away by rough dirt. On the inside of the root, however, there is little to no exposure to harsh soil erosion. Because of this, mitosis is needed less here - only to replace the dying cells.
c) The order for the letters should be: A, E, D, B, C. I'm including a picture to help you understand why. :)
Hope this helps!!
At Weeks Bay there was a population of 200 alligators. In May of 2006 a new species of catfish was released into the Mississippi. These catfish reproduce very fast and soon become a rich food source for the alligator population. This provides the alligators with the energy needed for more successful reproduction. The following summer of 2007, 100 babies were born and a total of 40 gators died that year. However, the next year in early 2008 there was a terrible drought, causing 100 alligators to die.
1. What was the population size of alligators during the summer of 2007?
WILL MARK BRAINLY
Answer:
1. 260
2.
3. drought
4. babies born
6. carrying capacity
7. population density
8. logistic growth
9. exponential curve
Explanation:
Why do the noble gases NOT form compounds readily?
Group of answer choices
They have an empty outer shell
They have a full valence shell
They have 7 valence electrons
They have no electrons
it's bc they have a full valence shell
What struggles do aquatic organisms have that terrestrial ones do not?
If you are not going to actually answer the question don't even bother.
Answer:
Aquatic animals can be found in water habitats, which can be either fresh or marine. Terrestrial animals can be found exclusively in the land. Aquatic animals respire through gills or their skin. ... The main difference between aquatic and terrestrial animals is their habitat and modes of living
Explanation:
Answer:
being destroyed easily
Explanation:
aquatic organisms are faced with lots of challenges,,,eg.....oilspillage on water bodies,this prevents entry of oxgen into water hence suffocation leading to death,also growth of weeds such as water hyacinth which suck nutrientss and oxygen from water,,,also aquatic krganisms are hunted by lots of predators compared to that of terrestrial
To extract DNA from strawberries a
was used first to break down cell membranes.
O base solution
O isopropyl
O alcohol solution
O buffer solution
Can someone please correct me or tell me if I’m correct please that will be lovely
Answer:
A
Explanation:
Destruction of habitat is not going to preserve the habitat.
The image depicts the impact of a mutagen on the phenotype of F1 and F2 offspring in nematodes, a common roundworm. Which
arguments can be made based on the information in the model You may select more than one correct choice.
Answer:
A, D, E
Explanation:
just did it
The arguments that can be made based on the information in the model are as follows:
The mutated DNA is a recessive allele. The mutagen altered the DNA of the worm in the parental generation. The DNA altered by the mutagen occurs in gamete cells and is passed to offspring.Thus, the correct options for this question are A, D, and E.
What is Mutagen?Mutagen may be characterized as a type of agent that possesses the capability to induce mutation within the genetic segment of living organisms. Mutagens are of two types, they are:
Physical mutagens: UV radiations.Chemical mutagens: Chemicals like ethidium bromide.According to the context of this question, mutation can only be inherited from parent to offspring, if it is induced within the gamete cells of parents. While during the course of life, the mutation also induces in the genomic sequence of an individual.
Therefore, the correct options for this question are A, D, and E.
To learn more about Mutation, refer to the link:
https://brainly.com/question/17031191
#SPJ2
