Some organisms seem to have undergone very little evolutionary change
over huge spans of geologic time. One example is the shark. Shark
ancestry dates back around 425 million years, which is about 200 million
years before the earliest known dinosaur. In all, abut 2000 to 3000
species of fossil sharks have been documented. About 1100 species of
shark remain on Earth today. These sharks represent an ancient life form.
Why do you think the rate of evolution of the shark has been so gradual?
4 sentence

Are the finches that Charles Darwin studied on the Galápagos Islands an example of divergent evolution or convergent evolution? Give two point to explain your thinking.

Answers

Answer 1

Answer:

shark are slow evolving species because of lower gene flow and rate if reproduction.

Darwin finches undergo divergent evolution

Explanation:

Sharks have evolved slowly because of following reasons –  

a) Lower rate of reproduction  

b) Restricted gene flow because of isolated habitat such as stretches of deep water

c) Staying close to the eggs and hence guarding them throughout their life thereby allowing no cross mating.  

d) Lower  rate of mitochondrial DNA (mtDNA) evolution  

Darwin’s finches show divergent evolution as different species of finches originated from a common ancestors. The beak size of finches vary form one species to other because of different diet habits


Related Questions

Predict the classification level that would first differentiate these snakes from a frog or a toad (amphibians).
a. class
b. phylum
c. order
d. genus

Answers

B. Phylum

is correct answer

Fill in the blank with a word that correctly completes the sentence.


Flatworms have a remarkable ability to generate a whole body from any small piece. This multi-headed worm will split apart and grow into several complete, separate individuals.


Offspring that are genetically identical to the parent are produced by reproduction.

Answers

Answer:

Small piece of its body.

asexual reproduction.

Explanation:

Flatworms is also reproduce by multiple fission. The body of flatworms splits into small pieces and each piece becomes a new individual. Asexual reproduction is a type of reproduction in which a new organism is formed from a single parent which is identical to that parent and no variation in size and shape of offspring. examples of asexual reproduction are binary fission, multiple fission, segmentation and budding.

Compare photosynthesis and respiration with regard to each of the following
source of energy (2)
materials used by each process (2)
location of each process in the cell (2)
when each process occurs in plants and animals (2)

Answers

Answer:

Explanation:

Photosynthesis Vs. Respiration

1) Photosynthesis gets it's energy from sunlight, and uses the sunlight to change water and CO2 into energy. Cellular respiration gets it's energy from glucose molecules and oxygen.

2) Photosynthesis uses energy, CO2, and water to make energy and releases oxygen. Cellular respiration uses glucose molecules and oxygen to make energy, and releases CO2 and water.

3) Cellular respiration takes place in the mitochondria, and photosynthesis takes place in chloroplasts.

The energy from photosynthesis is gotten from sunlight and uses the sunlight to change water and carbon dioxide into energy.

Photosynthesis refers to the process through which green plants transfer light to chemical energy. Respiration refers to the biochemical process where the cells of an organism get energy through the combination of glucose and oxygen.

Photosynthesis uses energy, carbon dioxide, and water to make energy and release oxygen. Cellular respiration gets its energy from glucose molecules and oxygen. Cellular respiration uses glucose molecules and oxygen to make energy and releases water and carbon dioxide. Lastly, cellular respiration takes place in the mitochondria while photosynthesis takes place in the chloroplasts.

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Objects that are further away from one another, have
more gravity?
True
False

Answers

Answer:

I think it is false

Explanation:

because when we put 2 magnet 4 cm distance the magnet does not have any gravity to attract each other

What is an organelle?

Answers

Answer:

Organelles are structures within a cell that perform specific functions like controlling cell growth and producing energy. Some examples are lysosomes, nucleus , mitochondria , and endoplasmic reticulum (ER).

Explanation:

Which of the following best explains how subsoil becomes rich in minerals?

Answers

Minerals from the topsoil leach down into the subsoil. Volcanic activity heats the rock fragments in the subsoil and releases minerals. Groundwater flows through the subsoil and deposits minerals. The bedrock below the subsoil is broken down into smaller particles.

A variety of species of Galapagos finches evolved from one original species long ago through
the process of
A)
asexual reproduction
B)
ecological succession
natural selection
D)
selective breeding

Answers

Answer:

A. Asexual Reproduction

Explanation:

The offspring that arise by asexual reproduction from a single cell or from a multicellular organism inherit the genes of that parent.

Galapagos finches can be called Darwin's finches are derived recently from the common ancestor. A variety of species of Galapagos finches evolved from one original species long ago through the process of natural selection.

What is natural selection?

Natural selection is the process of changing and adapting in the environment of a given population.

There are four conditions needed for natural selection:

Reproduction.Heredity.Variation in the organism.Variation in individual characters.

A variety of species of Galapagos finches evolved from one original species a long time ago by the process of natural selection.

thus, the correct option is C.

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Which kind of organism is an autotroph?
O consumer
O producer
O decomposer
O herbivore
Save and yit
Nyt

Answers

Answer:

producer

Explanation:

that are organisms that make their own food from light, water,carbon dioxide or other chemicals.

hopefully this helps you

An autotroph is a type of organism who can produce its own food. Therefore, Producer is the best option.

What is autotroph?

An autotroph is a type of organism that can produce its own food using inorganic substances or obtaining energy from the sun. Producers, such as plants or algae are able to prepare their own food by performing photosynthesis where they can convert sunlight into energy, thereby, playing a very important role in the food chain.

Plants perform photosynthesis which involves the use of sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar, such as glucose, thereby preparing their own food, but also serves as a source of food for other living organisms as well.

However, consumers, such as herbivores and carnivores are dependent on other organisms to obtain energy, while decomposers feed on dead organisms to obtain energy and return nutrients to the soil.

Therefore, producers are the organisms that prepare their own food, and hence called autotroph.

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The Earth's crust is divided into plates that move over the mantle and interact at
plate boundaries. This modern understanding of movement of the crust is explained
by
the principle of superposition
the theory of plate tectonics
the theory of geologic displacement
the theory of continental drift

Answers

Answer:

The theory of plate tectonics

Explanation:

The theory of plate tectonics because it's suggesting that it's about how the plates interact with eachother.

Food webs diagram the complex relationships of energy flow in an ecosystem containing a variety of producers and consumers. A diagram is provided. Which of the following correctly shows one path that energy would flow through this ecosystem?

A. A Star grass → termite→ wildebeest→ aardvark
B. B Hyena → aardvark → impala → harvester ant
C. C Grasshopper → termite→ warthog → hare
D. D Red oat grass → termite → wildebeest → lion

Answers

Hi! Hola! Aloha!

The answer would be D. Red oat grass > termite > wildebeest > lion

Hope this helps !

In food web, Grasshopper → termite→ warthog → hare correctly shows one path that energy would flow through this ecosystem.

What do you mean by food web?

A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community. Another name for food web is consumer-resource system.

Primary consumers, mostly herbivores, exist at the next level, and secondary and tertiary consumers, omnivores and carnivores, follow. At the top of the system are the apex predators: animals who have no predators other than humans.

Food web is an important conceptual tool for illustrating the feeding relationships among species within a community, revealing species interactions and community structure, and understanding the dynamics of energy transfer in an ecosystem.

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The protist kingdom is defined by how these organisms:
reproduce
escape from predators
decompose
get food​

Answers

Answer:Plz mark Brainliest

It is either reproduce or decompose

Explanation:

I learned about it this year

6. Genetic recombination, production of more offspring than can survive, 4 poin
and struggling with the challenges of the environment are all concepts
associated with
natural selection
mitotic selection
selective breeding
genetic engineering

Answers

Answer:6. Genetic recombination, production of more offspring than can survive, 4 poin

and struggling with the challenges of the environment are all concepts

associated with

natural selection

mitotic selection

selective breeding

genetic engineering

Explanation:A) selecting and breeding the organisms for

specific traits

Genetic recombination, production of more offspring than can survive, and struggling with the challenges of the environment are all concepts associated with selective breeding.

What do you mean by selective breeding?

Selective breeding entails selecting parents who possess particular traits to mate to produce offspring with more desirable traits. For thousands of years, humans have selectively bred a variety of plants and animals.

The reason for particular reproducing is to foster domesticated animals whose positive characteristics have solid heritable parts and can hence be engendered.

By selecting which typically animal or plant males and females will sexually reproduce and bear children together, selective breeding allows humans to selectively develop particular phenotypic traits.

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Help please. I posted a picture of the question and answer choices. ​

Answers

Our family plants a lot of tomatoes (the last option doesn’t belong)

Answer:

The answer is D. Our family usually plants tomatoes, onions, and okra.

What type of bond between water molecules pulls them into this tight ball?

Answers

Hydrogen bonds or h bonds are between water molecules

A water molecule contains an oxygen atom and two hydrogen atoms which are covalently bonded to the oxygen atom.Atoms in a covalently bonded molecule are always fighting for the shared electrons, the atoms attraction to the shared electrons is called the electronegativity. Therefore, the more electronegative an atom is the more it attracts the shared electrons.The  force of attraction between a partially electronegative atom and another partially positive atom is the hydrogen bond. It is the hydrogen bond that pulls water molecules together which results into a cohesive force between the water molecules.

Answer:

hydro

Explanation:

Should cities located in or near deserts build solar and wind farms? Why or why not? Cite evidence from the text to support your answer.

Answers

Solar because they will have more sun than wind. I do it have evidence to support.

2.
Select the correct answer.
The three domain system recognizes fundamental differences between the two groups of which one of these?
A. Eukaryotes
B. Prokaryotes
Ос.
Protists
Reset
Next

Answers

Jedjfhfj yes bro bro

What is a red tide ?

Answers

Red tide is a common name for algal blooms, which are large concentrations of aquatic microorganisms, such as protozoans and unicellular algae.

The upwelling of nutrients from the sea floor, often following massive storms, provides for the algae and triggers bloom events

do most mutations generally cause the development of new traits found in organisms?

Answers

Answer: Not all mutations lead to evolution.

Explanation: Also, many genetic changes have no impact on the function of a gene or protein and are not helpful or harmful. In addition, the environment in which a population of organisms lives is integral to the selection of traits.

Please mark me brainlest :)

Not all of them a mutation is just when something in the dna strand is replaced so in some cases it won’t change at all

Compare and Contrast: Vaccines versus Antibiotics

.

Answers

Answer:

Vaccine- prevents viral infections

Antibiotics- taken after you are exposed to the bacteria

Explanation:

How does killing whales affect the food chain?

Answers

Whales play an important role in stabilizing the aquatic food chain and reproduction of other species.

As more whales are killed the food distribution in the ocean becomes destabilized and causes changes in the food supply of many other kinds of marine life.

Whales are vital to the food chain, stabilising food flow and maintaining a healthy ocean.

As such, the rapidly decreasing whale population will have major effects on the ocean's ecosystem.

Believe it or not, whale poop also serves quite an important purpose to the ecosystem.

What is the purpose of control rods in a nuclear reactor, and how can their malfunction lead to meltdown?

Answers

Answer:

if they are not controlled they can make it go too fast which makes it explode

Explanation:

Where is potential chemical energy stored?
In a closet
In the bonds between atoms
Between different molecules
Between the protons of an atom

Answers

Answer:

In the bonds between atoms

Explanation:

Chemical energy is stored in the bonds that connect atoms with other atoms and molecules with other molecules. Because chemical energy is stored, it is a form of potential energy. When a chemical reaction takes place, the stored chemical energy is released.

Which reproductive organ has the greatest number of different functions?
A. Ejaculatory duct
B. Vagina
O C. Vas deferens
D. Ovary

Answers

Answer:

Ovary

Explanation:

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im playin

buh nah fr doe

How does a water wheel do work (NOT how does water do work on a water wheel)?

Answers

Answer:

The falling force of the water pushes the paddles, rotating a wheel.This creates a special channel known as a mill race from the pond to the waterwheel.

Explanation:

A waterwheel is a type of device that takes advantage of flowing or falling water to generate power by using a set of paddles mounted around a wheel.  

Answer:

water is water and wheel is wheel  do not just think of them like things that dont matter please love water

Explanation:


If you notice that there is a fire in a science lab, the first thing you should do is _____.
A. tell your teacher
B. pull the fire alarm
C. get the fire extinguisher
D. exit the room immediately

Answers

Answer:

I would say D. Exit the room immediately because the fire can spread if u wait to pull the fire alarm and such idk lol.

Explanation:

Just because

Which statements describe how a machine can help make work easier? Select two options.
It can put out more force than the input force by decreasing the distance through which force is applied.
It can increase the amount of work performed if the output force is in the same direction as the input force.
It can apply a force to an object in a different direction than the force applied to the machine.
It can increase the distance through which a force acts by exerting less force than was used on it.
It can exert a greater force through a greater distance than the force used on the machine.

Answers

Answer:

1st option and and 3rd one

Explanation:

Instructions
State five (5) differences between mass and weight.
Differentiate between scalar and vector quantities with examples.

Answers

Answer:

Mass is the measurement of what amount of matter is contained in an object. Whereas

weight is the measurement the pull of gravity on an object.

Another way to differentiate both is Mass is measured on a balance comparing a known amount a matter of to an unknown amount of matter and weight is measured on a scale.

Unlike weight, mass never changes due to the location of something. The mass of an object is measuring how much matter is in it.

Weight usually is denoted by W. Weight is mass multiplied by the acceleration of gravity.

Scalar quantity: one dimensional measurement of a quantity, like temperature, or mass. Vector: more than one number associated with it. Ex: Displacement, speed, velocity.

True or False: If an Ecosystem is out of balance then other plants and animals will be affected.

Answers

Answer:

True

Explanation:

It becomes a chain reaction

How can dissections better prepare your understanding of the world around us?

Answers

Dissection (as in cutting someone or something) helps better understand the world because we get to see how things work and how they connect, this can lead us to understand how we may be connected or/ and how our impact affects them/ it.
Dissection (detailed analysis of a text) helps us better understand the world around us because we can understand how the writer thinks of the world and this shows/ broadens our opinion on the world.

What is a homologous structure? Give an example

Answers

they are the same. like homologous chromosomes are the exact same chromosomes.
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