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How is the eggshell thickness related to the survival of bird species A and B?

) use different resources and therefore, they do not compete.

They have different needs and the island is able to provide for their needs.

They live in different type of shelter and eat different type of food. That is why competition between these two species is non-existent, thus, ensuring their survival.

Had these two different species need the same type of food and shelter, their number will diminish over time until only the fittest organism among the species will survive.

Explanation:

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answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

hello there the answer is d