Which could be an example of an adaptive radiation?

a. a burst of new species in a new habitat where selective pressure is different from an ancestral habitat, like has been noticed for "darwin’s finches" the cichlid fishes and numerous examples from the fossil record.
b. human domestication of wild plants into crop plants due to selectively breeding plants with desirable characteristics over several hundred thousand years
c. descent with modification and natural selection

The correct answer will be option-A

Explanation:

Adaptive radiation is a process of speciation by which organisms get diversified into many forms very rapidly from an ancestral species.

The process takes place when the species gets into a new environment and new niches which results in morphological and physiological traits.

In the given question, the various forms of Darwin’s Finches on the same island is the result of adaptive radiation as the different forms of the beak of Finches is the result of different niches and the different food provided by nature.

Thus, option-A is the correct answer.

good one: produce hormones that plants grow.

bad one: the problem with organic matter is that while plant nutrients are needed for crop growth, they can also stimulate excessive growth of the wrong plants – mainly, algae.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.