On the Galápagos Islands, Darwin observed tortoises with domed and saddle-shaped shells. How did Darwin’s observations of these tortoises help him form the theory of evolution by natural selection?

Answers

Answer 1
Helped to confirm that environmental changes cannot affect the characteristics of a species.

Related Questions

cloning is more controversial than cloning because it involves copying an entire organism

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It brown the best in my life I am not doing that right I am not doing anything I love you so so sorry I just love love I hope you have some amazing time here keep me updated thank you so so sorry if I am wrong.

please help, will give brainliest ​

Answers

Answer:

contraction and relaxation of the heart

Explanation:

what kind of cell has many orgins of replication

Answers

Answer:

Assembled replisomes bidirectionally replicate DNA to yield two copies of the bacterial chromosome. B) Linear eukaryotic chromosomes contain many replication origins. I

Answer:

eukaryotic chromosomes

Explanation:

Prokaryotic chromosomes have a single source of replication whereas numerous sources of eukaryotic chromosomes. Since eukaryotic chromosomes are much larger, many outlets are required for the whole chromosome to be repeated within a limited period of time.

A replication root is a segment of DNA in which a gene, plasmid or virus is repeated.

2. How are the differences in animal cells related to their functions?
3. How are cells organized within an animal?


I will give extra points!!

Answers

Usee socratic the app trust me it’ll tell you i use it for all my hw and tests

Two black guinea pigs were crossed and they produced a litter of 4 black and 3 white guinea pigs. Which best explains this occurrence?
White fur is dominant to black fur.
White fur was the result of a mutation.
Both parents were heterozygous for black fur.

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Answer:

Both parents were heterozygous for black fur.

help help pls will mark brainliest if i can

Answers

brain-nucleus

skin- cell membrane

stomach- mitochondria

blood- cytoplasm

how do you abbreaviate adenosine triphosphate

Answers

Answer:

ATP

Explanation:

the abbreviated term for this is ATP

Describe the structure of a virus.​

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Viruses vary in their structure. A virus particle consists of DNA or RNA within a protective protein coat called a capsid. The shape of the capsid may vary from one type of virus to another. The capsid is made from the proteins that are encoded by viral genes within their genome.


it on googIe
hope that helps

Answer:

All viruses contain nucleic acid, either DNA or RNA (but not both), and a protein coat, which encases the nucleic acid. Some viruses are also enclosed by an envelope of fat and protein molecules. In its infective form, outside the cell, a virus particle is called a virion.

Explanation:


In the deep ocean layer, the temperature and salinity of the water is

options to anwser
the same
continues to decrease rapidly

Answers

Answer:

Option 2:- continues to decrease rapidly

Why does DNA have to relocate

Answers

Answer:

chromosomes are made up of a DNA protein complex called chromatin that is organized into subunits called nuclesomes...

How can climate change be reduced? How can climate change be fixed? Is there any evidence for us to see that climate change has been affecting us?

Answers

Answer:

We can easily reduce and fix climate change by Using less greenhouse gasses and by switching to all electric. Unfortunately global warming has started to affect us in ways such as extreme weather, wildfires and even Global warming has shown to cause infectious diseases to spread more rapidly.

Hope this helps

The MA of a lever is 4. If you have to lift the object up 20 cm,
how far will you have to pull down?

Answers

Answer:

jayfeather friend me

Explanation:

Answer: The mechanical advantage of a machine is 4. ... Mechanical advantage MA is the ratio of output (generated by the machine) force to input (applied to the machine) force. So MA = 4 means that for example if you apply 100 N then your machine will multiply that force and generate 400 N.

Can you guys please help me❤️

Answers

Answer:

C, hot weather is external

Explanation:

Answer:

I think that it is option C

Which molecule can be classified as saturated or unsaturated? *
a) carbohydrate
b) protein
c) lipid
d) nucleic acid

Answers

Answer:be careful for anonumas1

Explanation:

Which graph represents selection that may lead to reduced variation in a population? A graph has trait value on the horizontal axis and population of individuals on the vertical axis. The original population and population after selection have similar curves, but the original population peaks before the population after selection. A graph has trait value on the horizontal axis and population of individuals on the vertical axis. The population after selection increases, decreases, increases, and then decreases again. The original population increases at the point that the original population drops. A graph has trait value on the horizontal axis and population of individuals on the vertical axis. The original population peaks at the same time as the population after selection but the population after selection peaks higher and at a more rapid speed. A graph has trait value on the horizontal axis and proportion of individuals on the vertical axis. The original population and population after selection have similar curves but the original population is slightly higher at all points. Mark this and return

Answers

Answer: B

Explanation:

Answer:

Graph B

Explanation:

Question 2 Multiple Choice Worth 4 points)
[0.04H] Which of these statements is correct about tidal energy and ocean thermal energy?
A - Tidal energy may increase the fish population.
B - Tidal energy may increase the bird population.
C - Ocean thermal energy may alter the wave heights.
D - Ocean thermal energy may alter the ocean ecosystem.

Answers

Answer:

A.Tidal energy may increased fish population...

and

D. Ocean Thermal Energy may Alter The Ocean ecosystem.

Explanation:

I hope.it help u

Answer:

D.  Ocean Thermal Energy may Alter The Ocean ecosystem.

Took Flvs test im valid

Which of the following statement is not true?
a. Exposure to electromagnetic fields is known to cause leukemia.
b. Excessive exposure to asbestos can lead to asbestosis.
c.Excessive exposure to radiations can cause health problems including cancer. d. Any sound above 80 dB is potentially dangerous.​

Answers

it’s b sorry if i’m wrong
b. excessive exposure to asbestos can lead to asbestosis

There are 3 main types of Soil Textures: Clay, Sand, & A Fine B. Loam O C. Coarse 0 D. Silt​

Answers

I think it’s D.silt but don’t get me wrong it just seems right because we are talking about soil

Which of the below is NOT a cephalopod?
A. squid
B. snail
C. octopus
D. nautilus

Answers

The snail is NOT a cephalopod

Pattipan squash are either white or yellow. In growing Pattipans, you notice that if you want to get yellow Pattipans at least one of the parents must be yellow. Which color is dominant?
Explain.

Answers

Answer:

yellow

Explanation:

Yea it's yellow cus yea it's yellow

How does the DNA sequence in a normal hemoglobin gene compare to a sickle cell hemoglobin gene?



ASAP

Answers

Answer:A person with normal hemoglobin has inherited one allele for normal hemoglobin from each parent and so has the genotype Hb A/Hb A. In contrast, a person who has sickle disease has inherited one sickle-cell allele from each parent and has the genotype Hb S/Hb S.

Explanation:

The DNA sequence in a normal hemoglobin gene is different from the hemoglobin gene of sickle cell due to a change in nucleotide base from A to T.

What is Sickle cell anemia?

Sickle cell anemia is a group of disorders which cause the red blood cells (RBCs) to become misshapen and break down. It is an inherited group of disorders, in which the red blood cells contort into a sickle shaped cell. The cells die early due to this disorder, leaving a shortage of healthy red blood cells in the blood and can block the blood flow causing pain and crisis.

Symptoms of sickle cell anemia include infections, pain and fatigue.

Genetic studies have shown that the base sequence in the normal hemoglobin (HbA) and the sickle cell hemoglobin (HbS) differs at only a single nucleotide position including a change from an A to a T nucleotide base. This change in nucleotide to one codon results in a single amino acid change in the hemoglobin.

Learn more about Hemoglobin here:

https://brainly.com/question/15011428

#SPJ6

Margaret has detached earlobes (a) , which is a recessive trait. If she wanted ALL of her children to have attached ears (A), what type of man would she need to marry in order to give her the best chances?

A. A man with the genotype AA

B. A man with the genotype aa

C. A man with lobed ears like hers

D. A man with the genotype Aa

Answers

I think the answer is A. My dude.

Margaret can have all her children with attached earlobes only if she marry a man with AA dominant genotype.

As given,

Margaret has detached earlobes (a) which is a recessive trait  If she wanted all of her children to have attached ears (A) if she have to marry a man with the dominant trait

Punnett' square:

                                    A           A

                        a       Aa         Aa  

                          a       Aa         Aa

[Aa] are the genotype with attached earlobes [dominant genotype]

Therefore, Margaret can have all her children with attached earlobes only if she marry a man with AA dominant genotype.

To know more about dominant and recessive trait.

https://brainly.com/question/20730322

A female heterozygous for dark hair and freckles married a male also heterozygous for dark hair and freckles. What is the possibility of having offspring with no freckles and light hair?

•8/16
•3/16
•9/16
•1/16

Answers

Answer: I would say 3/16 but then again im not too sure you may want to wait until a second answer arrives :D

PLEASE HELP DUE TOMORROW!

what are the advantages of harvesting more crops and trees to reducing carbon emissions?

And what are disadvantages of harvesting tree and crops for reducing carbon emissions?

Answers

Answer:

the advantage is free more space to plant crops and farm animals and build houses

the disadvantage is destroying the animal environment and may cause climate change and killing an endangered species by destroying there houses or by accident

Answer:

As trees grow, they help stop climate change by removing carbon dioxide from the air, storing carbon in the trees and soil, and releasing oxygen into the atmosphere and more space.

!!!!!!!!!!!!PLEASE HELP ME PLEASE PLSEASE!!!!!!!!!!

Answers

Answer:

look at the directions and muitply by 2

Part B
How did you determine the types of cell division for both phases depicted in your model? Explain your answer.

Answers

Answer:

Cell division is a process that makes our skin, tissues, muscles, sex cells. It is the building block of our body.

Explanation:

When parents cells ahs been divided into two or more than two daughter cells then it is called division of cells. The division of cells occur as a larger cell. When we talk about eukaryotic cells, these cells divided into two distinct types of the cells, the vegetative cells.

The daughter cells are the identical to the parents cells genetically. There are two types of division such as mitosis and meiosis. When parents cells divides in daughter cells and daughter cells divided further, this process called the cells cycle. The mitosis cell division occur interphase. Meiosis cell division occur in two phase meiosis I and meiosis II.

What is Lucy? This is for Science they said it’s a gorilla I think I just need confirmation.

Answers

Perhaps the world's most famous early human ancestor, the 3.2-million-year-old ape "Lucy" was the first Australopithecus afarensis skeleton ever found, though her remains are only about 40 percent complete (photo of Lucy's bones). Discovered in 1974 by paleontologist Donald C.

ill give brainliest JUST HELP ME PLEASE its due tmr, please be accurate

Answers

Answer:

Interphase - B,J,

Prophase - G,E

Metaphase - C,F

Anaphase - I,D

Telophase - A,H

Explanation:

I think this is correct.

Remember:

Interphase - the DNA is all clumped up

Prophase - the DNA begins to unravel and float around

Metaphase - M for middle; they line up in the middle

Anaphase - The begin to split and be pulled apart

Telophase - They are at their opposite ends, but not yet their own cells

*
what’s a small cellular structure with a specific function

Answers

Answer:

tissues

Explanation:

organised to perform one or more specific function

98.9 grams Na-
Convert to moles

Answers

Answer:

4.31877 moles

Explanation:

I believe its around 4.30 moles.

98.9g over 1 times 1 over 22.90 this is the molar mass of na= 4.31877  moles

Hope this helps!

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