Name one thing that Darwin observed on the Galapagos Islands that supported his theory of evolution by natural selection


Answer 1

Name one thing that Darwin observed on the Galapagos Islands that supported his theory of evolution by natural selection similar but not identical species of finches inhabited islands near the Galapagos.

What did Darwin observe in the Galapagos Islands?

In the archipelago, Darwin observed birds with different beak shapes, which he later discovered were all finches. Looking closely, he noticed that each beak shape helped in a way of feeding: wide and robust beaks for eating hard seeds, those more tapered for insects and larvae.

Darwin saw that variation and selection produced adaptations not only in the structure of the feet, but also in the shape and size of the beaks.

See more about Darwin at


Answer 2

Darwin discovered that different species of finches lived on different islands. These different species had different looking beaks. Some meant for berries, some meant for nuts, and some meant for bugs.

Related Questions

Most cells cannot harness heat to perform work becausea. heat does not involve a transfer of energy.b. cells do not have much thermal energy; they are relatively cool.c. temperature is usually uniform throughout a cell.d. heat can never be used to do work.
you have selected the following prediction to test: Previously thinned forests will have higher tree survival than adjacent forests that were not thinned. Now you need to define the key variables that you will use to test this prediction. For the following variables, sort them as independent variables, dependent variables, or variables that should be controlled (held constant)1. thinning or no thinning before the fire elevation of the site 2. dominant tree species 3. tree survival rate after the fire A. Independent variableB. Dependent variable C. Controlled variable
A nucleic acid molecules is a type
HIV's genome of RNA includes the code for reverse transcriptase (RT), an enzyme that acts early in infection to synthesize a DNA genome off of an RNA template. The HIV genome also codes for protease (PR), an enzyme that acts later in infection by cutting long viral polyproteins into smaller, functional proteins. Both RT and PR represent potential targets for antiretroviral drugs. Drugs called nucleoside analogs (NA) act against RT, whereas drugs called protease inhibitors (PI) act against PR. Which of the following treatment options would most likely avoid the evolution of drug-resistant HIV (assuming no drug interactions or side effects)?(a) Use a series of NAs, one at a time, and change about once a week.(b) Use a single PI, but slowly increase the dosage over the course of a week.(c) Use high doses of NA and a PI at the same time for a period not to exceed one day.(d) Use moderate doses of NA and two different PIs at the same time for several months.
Chemicals known as ____ and ____ guide neuron migration

You cross two red griffins with blue eyes and produce offspring that are: red with blue eyes, red with green eyes, white with blue eyes, and white with green eyes. Assuming that the genes for body color and eye color are on different chromosomes, what is the ratio of these offspring’s phenotype?



The reason for the offspring to present these genotypes is that during the formation of the gametes, the alleles separate and are inherited independently, therefore they can generate several different phenotypic combinations.


In order for an offspring to present very different phenotypes, as shown in the question above, it is necessary that the two red griffins with blue eyes that were crossed are heterozygous. Thus it will be possible for the offspring to present a wide variety of phenotype, according to Mendel's second law.

Mendel's second law is called the Law of segregation. This law explains that the alleles (which determine the characteristics of individuals) are separated in the formation of gametes and inherited by the offspring of a cross independently, and can generate different combinations of phenotypes, when the parents of a cross are heterozygous.

What type of powerful storms is Mercury subject to and where do they come from?



Mercury is wracked by intense magnetic disturbances more extreme than any on Earth, new research suggests


the small, rocky planet also experienced volcanic activity for much longer than once thought, according to several new studies base don observations during the latest flyby of the small, rocky planet by a NASA spacecraft.

Evidence that agrees with your prediction supports your


Everything that I agree with your position could support your /hypothesis/


I think the answer is hypothesis

For a molecule to be considered organic what elements must be present? A. Carbon only B. Oxygen and hydrogen C. Carbon and hydrogen D. Carbon and oxygen


For a molecule to be considered organic elements must be present in  Carbon and hydrogen. The answer to your question would be letter C. These are use in order to create an element which is further used all living organisms in living.
for a molecule to be organic, it has to contain a backbone of carbon and some hydrogen so the answer would be C. 

Which things need to be present for natural selection to take place? (select all that apply)A.Variation in the population.
B.The ability for asexual reproduction.
C. Competition between organisms.
D. Large amounts of resources.



A & C


Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.

YES - A) You must have variation in the population, typically in the terms of "fitness" or having admirable/sucessful traits that make them more likely to reproduce and ensure their own offspring are fit too.

NO - B) It is sexual (not asexual) reproduction that uses natural selection for their offspring. Although some asexual organisms use natural selection, it is ALWAYS used if possible with natural selection to ensure the fitness of characteristics is passed down.

YES - C) Competition is necessary for natural selection to occur. When those who are more physically fit compete, they are more likely to live against their opponent and therefore pass on the trait of fitness.

NO - D) Although resources are necessary, large amounts are not as it does not lead to fighting over them (scarcity) bringing us back to the need for competition above.

Hope this helped!

Compare epidemic and murine typhus.



The major differences between murine and epidemic typhus are their infection mode.


Typhus is a fever disorder that can be endemic or epidemic in nature. Both disorders are pathological and sociologically similar. Endemic typhus is also called as murine typhus.

murine typhus includes several symptoms such as high fever, rashes on the trunk of the body, nausea, diarrhea, and vomiting and infects by the flea feces contact to cut or open wound.

Epidemic typhus is a similar disorder but with more serious symptoms, including hypotension, bleeding into the skin, delirium, and death and spread by infected body lice.

Thus, the major differences between murine and epidemic typhus are their infection mode.