In 1831, Charles Darwin visited the Galapagos Islands While observing the giant land tortoises that lived on these islands, Darwin noted that the shape of the tortoise shell varied depending on which island the tortoise lived. Tortoises on one island had round shells, for example, whereas tortoises on aneighboring island had more flattened, saddle-shaped shells. Which statement BEST summarizes Darwin's explanation for these differences?

A) Random mutations caused the shape of the shells to fluctuate periodically.
B) The shape of the tortoise shell varied because the predators on the islands were all similar.
C) The particular shape of the shellwas best suited for the island on which the tortoise was living.
D) Tortoises who used their shells in special ways caused the shells to become larger, rounder, or flatter. ​

Answers

Answer 1

Answer:

The answer is C!

Explanation:

Because i just had this on a test


Related Questions

What is missing from the venn diagram PLEASE HELP!!

Answers

Answer:

Esta es mi respuesta quizá hay respuestas que difieran de la mía .

Bueno tus diagramas son mas de euler que de venn, por que les falta el conjunto universo. pero bueno para lógica matemática nos sirven ambos.

A ver:

Para representar por Compresión, expresamos la principal característica global que define a los elementos del conjunto con simbología o escritura.

Para expresar por Extensión se ponen todos los elementos del conjunto.

Para tu ejercicio:

a)

Extensión

A={ 1 ; 4 ; 5 ; 12 }

B={4 ; 8 ; 12}  

Compresión

x / x ∈ AUB ⇔ x∈A  ó  x∈B  

b)  

Extensión

A={10,5,14}

B={5 ; 14}

Comprensión

x / x ∈ A ⇔ B⊂A ⇒ x ∈ B  

c)

Extensión

A={8 ; 9}

B={5 ; 15}

Comprensión

x / x ∈ A ⇔A⊄B

x / x ∈ B ⇔B⊄A  

Explanation:

A genetic mutation causes a squirrel to be born with much darker fur than its parents.

How will this mutation most likely affect the squirrel population?

Because the trait was caused by a mutation, it will not be passed on to any offspring, resulting in the disappearance of the trait.
Because the trait was caused by a mutation, it will be passed on to offspring over many generations, resulting in a population of darker squirrels.
If the trait is unfavorable, it will be passed on to offspring over many generations, resulting in a population of darker squirrels.
If the trait is favorable, it will be passed on to offspring over many generations, resulting in a population of darker squirrels.

Answers

Answer: If the trait is favorable, it will be passed on to offspring over many generations, resulting in a population of darker squirrels.

The mutation most likely affects the squirrel population if the trait is favorable, it will be passed on to offspring over many generations, resulting in a population of darker squirrels. The correct option is D.

What is mutation?

A mutation is a change or modification in the DNA or gene sequence of the organism. The modification is done due to mutagens. These mutagens delete or insert or replace the bases and cause differences.

Here, due to mutation, the color of the squirrel changed to black, so if the gene of black color will be transferred to future generations, it can be dominant or recessive.

Thus, the correct option is D, If the trait is favorable, it will be passed on to offspring over many generations, resulting in a population of darker squirrels.

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PLEASE HELP ME BRAINLY IF CORRECT!!!!!! PLEASE
The rock shown below has a layering of black and white
bands. The light bands and dark bands contain different
mineral crystals.
In what type of environment did this rock sample most likely form?
A. At the bottom the ocean
B. Just below Earth's surface, near an active volcano
C. Aboveground
D. Deep below ground, after being exposed to extreme heat and pressure

Answers

Answer:

D. deep below ground, after being exposed to extreme heat and pressure

Answer:

It D. Deep below ground, after being exposed to extreme heat and pressure

Explanation:

I hope it helps

IF your confued with the other one.

Of all of the energy given off by the Sun directed towards Earth, approximately only 50 percent of the energy penetrates directly to
the surface of Earth. What is the best explanation for what happens to the rest of the energy?
A)
Energy is lost during while traveling through space.
B)
Energy is reflected or absorbed by Earth's atmosphere.
C) Some of the energy is reflected back into space by the Moon

D) Energy is lost through the process of overcoming the Sun's large
gravitational force

Answers

Answer:

The answer is C

Explanation:

Answer:c

Explanation:K12

Neutral pH is ______.
Choose one answer.
a. 7
b. 5
c. 0

Answers

Answer:

7

Explanation:

Answer:

According to the pH scale

A. 7 is the correct answer

The sudden twisting of a joint beyond its normal range of motion, causing a temporary subluxation, is called a:

Answers

Answer:

Sprain

Explanation:

A sprain occurs when a joint is weakened by the advent of some mechanical forces which cause twisting of the joints. This results in partial dislocation of one of the bones at the joint. The effect of strain can range from mild to severe depending on the amount of damage that is being caused at the joint region.

Nucleus is to cell as____is to organism

Answers

Answer: Nucleus of an animal cell

The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes

Explanation: big brain

1.
In the early 1900s, Thomas Hunt Morgan was among the first scientists to contribute to the chromosome theory of heredity. Morgan’s investigations into heredity in fruit flies led him to propose that the event represented in the diagram sometimes occurs.


Which statement about the event represented in the diagram is valid?

Answers

Answer:

"The genes for all organisms are composed of the same building blocks"

Explanation:

The statement about the event presented in the diagram sometimes occurs - D. The event provides genetic diversity in eukaryotic cells.

The given event in the diagram is known as crossing over which takes place during the process of meiosis.

Crossing over takes place during the pachytene stage of Prophase I of Meiosis I where the non-sister chromatids of homologous chromosomes exchange genetic material

this results in the recombination of the genetic material and creates a new genetic combination.

Thus, genetic variations occur which can be beneficial to the offspring.

Thus, the statement about the event presented in the diagram sometimes occurs - D. The event provides genetic diversity in the eukaryotic cell.

List and explain 3 mutations that allow cancer cells to occur

Answers

Answer:

Germline mutations, Chromosomal alterations and Point mutations.

Explanation:

Mutations in genes is responsible for causing cancer because it accelerate rate of cell division or inhibiting normal controls. Germline mutations, Chromosomal and Point mutations are the three types of mutations which causes cancer cells to develop. Germline mutations causes inherited cancer because the mutations occur in sex gametes means cancer disease inherited from parents to offspring while Chromosomal and Point mutations occur in the body not in the sex cells.

The height of the wave is the MOST affected by the

A) speed of wind
B) speed of the ocean
C) salinity of the ocean
D) amount of solar energy

Answers

b i think!! hope this helped

only expressed when the dominant allele is not present

Answers

the answer you are looking for is recessive gene

Do earthquakes cause volcanos to erupt?​

Answers

yes when a earthquake is greator than 6 is close nearby

Explanation:

true or false Photosynthesis uses water and carbon dioxide to make glucose

Answers

Answer:

true

Explanation:

there isnt really much to explain so true.

Why might some countries be more reluctant than others to take steps to reduce the levels of greenhouse gases?

Answers

Answer: Please look at explanation for answer

Explanation:

Some countries may be developing and therefore, need more supplies that might need Greenhouse Gases. A rich country like China or the US, is fully developed and need less Greenhouse gases based of its economically levels.For example,If a war happens in the US, it will need to use more Greenhouse gases since based on our technology. Hope this helps you :)

Answer:

    Climate change issues have economic, political, and social consequences that make them difficult to solve. For example, some countries that are emitting greenhouse gases are not financially capable of changing to a cleaner-burning energy source.

What is the purpose of the cell cycle checkpoint?

1)to send damaged cells to their death
2)to signal that repair of cells must occur
3)to force DNA to replicate
4)to force the cell to continue to grow
5)all of the above

Answers

Answer:

i guess it's 4 but not sure

I NEED HELP ASAP I WILL GIVE 50points and BRAINLIEST if ur answer is correct ( first come first serve)
The steps of the action potential are listed below in random order.

A. The nerve impulse moves down the axon.
B. The inside of the membrane becomes positive, and the outside becomes negative.
C. A stimulus is received by the dendrites.
D. The membrane has a resting potential that is positive on the outside and negative on the inside.

Which of the following lists the steps in the correct order?
A, B, C, D
D, C, B, A
B, C, A, D
D, A, B, C

Answers

Answer:

D, A, B, C is correct answer

D, A, B, C is the correct order for the steps of action potential.

Neurons sends the information down the an axon.Action potential is an explosion of electrical activity that is created by depolarizing current.

What is action potential?It occurs when the membrane potential of a specific cell location rapidly rises and falls.The depolarization then causes adjacent locations to similarly depolarize.There is a rapid sequence of changes in the voltage across a membrane.

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please? someone help me with this. Is the land abiotic or biotic?

Answers

Answer:

Land is abiotic because it is not living.

Explanation:

6. Which type of organic compound has molecules that include both an amino group and a carboxyl group?
a. Alcohols
b. Proteins
C. Carbohydrates
d. Lipids
anistics of all amino acids are

Answers

Answer:

The answer is Proteins.

I think it’s B. Proteins

Which of the following groups represent organs that can be found in plants?
roots, stems, leaves, flowers
roots, leaves, bark, stems
roots, leaves, cells, stems
roots, stems, chloroplasts, flowers

Answers

2nd one I think so sorry if it’s wrong :((

Stems, roots, leaves, and bark. The three fundamental organs of vascular plants are the roots, stems, and leaves; nevertheless, these organs frequently have undergone specialization for a variety of purposes and do not appear to be "typical."

What are organs of plants?An organ is a collection of tissues that perform the same function and are located in the same place. Roots are plant organs. They firmly anchor plants and have root hair cells on their surface that absorb water and nutrients from the soil. Additional plant organs include flowers, leaves, and stems. Among these, the stems that support reproductive organs, such as angiosperm flowers and conifer cones, are the most visible. A group of tissues that collaborate to perform a specific function as a structurally sound functional unit. Plants' major organs are the leaf, root, stem, and reproductive organs. The leaf's primary function is to produce food for the plant via photosynthesis.

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What organisms complete the process of photosynthesis?

Answers

Answer:

plants

Explanation:

because in group of living things there is plants and animals , plants have chrolophyll and animals don't have chrolophyll

Suppose you try to heat your house using a fireplace in one of the rooms. Would a fan be helpful?

Answers

yes it would blow heat around the house ....................

Answer:

Yes it will

Explanation:

If You Have a Fireplace or Wood-Burning or Pellet-Burning Furnace. First, if you also have forced air, turn the fan on to help circulate heat. Make sure your ceiling fans rotate clockwise so they pull cool air up off the floor and push warm air down. And also keep them running at their lowest speed.

hope this helped! :)

The 14th and 15th Amendments protected African Americans' right to citizenship and the right to vote.
Which is true of how Southern States responded to the 14th and 15th Amendments following Reconstruction?

A) Southern States reluctantly agreed to and followed the 14th and 15th Amendments.

B) Southern States passed what became know as the "Corrupt Bargain" to nullify these amendments.

C) Most southerners protested that these amendments were unconstitutional without first passing the Civil Rights Act of 1964.

D) Southern States passed "Jim Crow laws" to suppress black voters and maintain segregation.

Answers

Answer:

The answer is they passed the Jim Crow Laws, D

The 14th and 15th Amendments protected African Americans' right to citizenship and the right to vote. Southern States passed "Jim Crow laws" to suppress black voters and maintain segregation. Thus option D  is correct.

What is Jim Crow laws?

During  the 1880s and 1960s, a majority of American states are forced to segregation through a law called jim crow law which was applied From Delaware to California, and from North Dakota to Texas, many states   impose legal punishments on people for consorting with members of another race.

some of the common types of laws forbade intermarriage and ordered business owners and public institutions and separate their black and white clientele.

This law is a part of  of American history with having been enacted at the state and local levels to mandate and maintain racial segregation in the southern United States.

The  Jim Crow Laws are economic, social, and educational woes that blacks living in the South have been forced to live with for decades.

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What do you notice about the products of cellular respiration compared to the reactants of photosynthesis?

Answers

Answer:

vgvgjvgjvgjbjhj

Explanation:

Answer: the product for photosynthesis is the reactant for cellular respiratio. The equation is just flipped around.

Explanation:

name two luminous object other than the sun​

Answers

Magnétard et un pulsar

The fertilized egg (zygote) of a human contains how many chromosomes?

Answers

Answer:

23 chromosomes from father

23 chromosomes from mother

46 chromosomes in total

43 in total when add up of 23 and 23 from both parents

What organelles have evolved through endosymbiosis?

Answers

Answer:Mitochondria and chloroplasts originated from the endosymbiotic association of aerobic (more...) A critical step in the evolution of eukaryotic cells was the acquisition of membrane-enclosed subcellular organelles, allowing the development of the complexity characteristic of these cells.Hope this is fine for you

Answer:

mitochondria and plastids

Explanation:

your welcome :D

Which relationship is correctly identified?
Mutualism; a monarch butterfly and viceroy butterfly look identical to confuse predators and potential mates.
Parasitism; a tapeworm lives in the small intestines of a human, causing the human to get sick.
Mutualism; the cuckoo bird lays its eggs in the nest of another bird, and the baby cuckoos destroy the other eggs.
Parasitism; a berry plant attracts birds to eat its fruit, and the birds spread the berry seeds through their biological waste.

Answers

Answer:

Parasitism; a tapeworm lives in the small intestines of a human, causing the human to get sick.

Explanation:

The true meaning of Parasitism is something that lives inside of something that can cause it to be sick or leave behind bacteria

Regulating body temperature is important for animals to maintain homeostasis. One way humans do this is through sweating. Horses are one of the few animals that also sweat to cool themselves. What does this common homeostatic mechanism indicate about humans and horses? A. They evolved the trait simultaneously . B. They are the two species that regulate body temperature . C. They share a common ancestor . D. They evolved in different environments .

Answers

Answer:

The answer is option C "They share a common ancestor"

Explanation:

Homeostasis can simply be defined as the processes which animals needs to undertaken or the conditions animals exhibits to maintain a balanced or stable condition in the body system that are significant for the survival of the animal.

One of the ways animals maintain a stable state is regulating the body temperature through sweat and this process is peculiar to both Humans and Horses because the share a common ancestor considering Homeostasis to be a mechanism for evolution.

What happens to Earth’s surface when horizontal pressure is applied to rocks?
a.
they break and one layer slides beneath the other creating a shelf
b.
they fold to create ridges and valley in the same direction to which pressure is applied
c.
they fold to create ridges and valleys perpendicular to the direction to which pressure is applied
d.
the pressure causes friction that changes the composition of the rocks

Answers

Answer:

I believe C

Explanation:

When horizontal pressure is applied to rocks, ridges and valleys form perpendicular to the direction of the pressure .

Answer:

c

Explanation:

Put the last 6 (Creep to Avalanche) in order from Fastest to Slowest.

Answers

Answer:

creep, solifluction, slump, earthflow, mudflow, debris avalanche, rockfall

Explanation:

Mass movement also known mass wasting is the motion of rock,  regolith (loose mixture of soil and rock particles that covers the earth's surface), snow, and ice down a slope. Based on increasing speed of movement, the given mass movement processes are as follows:

Creep- this a very slow, usually continuous movement of regolith down slope.

Solifluction - this is a sediment flow. A sediment flow is a mixture of rock, regolith with some water. The rate solifluction is measured in centimeters per year. It occurs at a faster rate than than creep.

Slumps - is a type of mass movement whereby there is a downward rotation of rock or regolith along a curved surface producing depressions or scars on the slope. It occurs at a faster rate than solifluction.

Earthflows - they usually occur with heavy rains and occur at a much faster rate with velocities between several centimeters per year and hundreds of meters per day.

Mudflows- are a highly fluid mixture of sediment and water which usually result from heavy rains in areas where there is an abundance of loose sediment. These sediments are picked up by flowing streams of water. Mudflows occur at high velocities and can travel long distances.

Debris Avalanches - These are very high velocity mass movements that result from the complete collapse of a mountainous slope. Earthquakes and volcanic eruptions usually cause debris avalanches. Avalanches involving snow only is known as snow avalanches.

Rock Falls - Rock falls occur when a piece of rock which may be large or small on a steep slope comes loose and falls down the slope. On its way down it may dislodge other rocks which also fall down the slope. Rock falls are the fastest of the six types of mass movements stated.

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Non-Human Resources are divided into two main groupsO Renewable Resources and Renewable ResourcesO Natural and Non-essentialEssential and Non-Essential You buy 5 balloons and 3 banners for $14. Your friend buys 1 balloon and1 banner for $4. How much does each item cost? Which of the following tables can be generated from the equation y = 2x + 1 A. x y 2 1 3 2 4 3 5 4B. x y -4 1 -2 -1 0 -3 2 -5C. x y 1 3 2 5 3 7 4 9D. x y 0 3 1 5 2 7 3 9 a wire has a resistance 12 ohm. It is bent in the form of circle. The effective resistance between the points on any diameter will be:. a)12 ohm b)6 ohm c)3ohm d)24ohm EXPERIMENTYou have learned that carbon dioxide is a compound consisting of two atoms of oxygen united with one atom of carbon. This substance is a gas which you exhale (breathe out) as waste material. In this experiment, you will combine carbon dioxide with limewater (calcium hydroxide) to make a new compound called calcium carbonate. You may do this experiment as required with the supplies listed below, or watch the video demonstration. Several cars had to stop to allow a mother duck and her babies to walk across the road. Select the word from the drop down-menu that correctly completes the sentence. The word across functions as a(n) If the unfertilized egg of a bird contains 18 chromosomes, how many chromosomes would be found in the same bird's muscle cell? b. Betelgeused. Sirius2. Which star has a surface temperature most similar to the surface temperature of Alpha Centauri?a Polarisc. Procyon Bb. Betelgeused. SiriusHelp me plz The chemical's name to the right, in molecular or ionic compound , usually ends in -ide How do we know which chemical goes first when we are naming covalent compounds ? Please help me solve. - 4+(-3) Select the four types of rodents. mushroom mouse lichen vole rat tick shrew beetle Was Estes Kefauver a great politition was he a suporter of the codes On earth day 40 people volunteer to work at the city park cleanup. 10 of the 40 volunteers are high-school students. The coordinator wants to know what percent of the volunteers are in high school Help I really need help A lever is used to lift a load by applying an effort of 200 N. If load is 2o cm and effort is 80 cm far from the fulcrum, find the amount of load. Natasha is wrapping gifts for the holidays to donate to a local community center. Natasha has 240 square feet of wrapping paper. If Natasha can wrap 8 gifts with 15 sq feet of paper; how many gifts can she wrap in total? Can someone help me with this please???Describe in words what you will do to solve this. You do not need to solve. -3x = 12 Please help! giving all the points I have!!! will give brainliest!! what was the advantages to each state having one vote How does fear over come imagination? Steam Workshop Downloader