a shrew is adapted for burrowing and a monkey for tree dwelling. their forelimbs appear quite different from each other's, but the internal structure of the forelimbs of these two animals is same. what do you conclude from this example?

a) the forelimbs of the shrew and the monkey are homologous structures, so these two animals share a common early ancestor.

b) the forelimbs of the shrew and the monkey are analogous structures, so these two organisms share a common early ancestor.

c) the forelimbs of the shrew and the monkey are homologous structures, so these two animals would be able to interbreed.

The correct answer would be option A.

Explanation:

Homologous structures can be defined as organs or anatomical skeleton of living organisms, that look different in different animals but are similar in anatomical structures, which displays that the animals share a common ancestor. Homologous structures generally have structures that are similar in their structure but the function is different.

The forelimbs of shrew and monkeys appear to look different but similar internal structure as homologous organs.

Thus, the correct answer would be option A.

The correct answer is B.Their numbers have increased because of the Endangered Species Act and E.They are an example of protecting biodiversity through the passage of laws.

Explanation:

Gray whales are nearly 45 meters long baleen whales live in the pacific ocean. Gray whale species were on the line of extinction due to overhunting or whaling in the mid 90's but due to the protection given under Endangered Species Act, its number increased now to 25,000 and in 1994 it was removed from endangered species list.

Endangered Species Act's purpose is to protect those animals and plants which are at the risk of extinction and increase their number in the wild. It is the strongest law implemented to save biodiversity.  

So gray whale species have increased due to the Endangered Species Act which is an example of protecting biodiversity through the passage of laws. Therefore the correct answer is B and E.