What is autogenic succesion?

What is ecological succesion? Explain the succession of plants on a bare rock.

What is heterotrophic succesions?

These questions consist of two statements each printed as Assertoin and Reason. While answering these questions, you are requied to choose any one of the following four responses. If both Assertion and Reason are true and Reason is correct explanation of Assertion If both Assertion and REason are true but Reason is not correct explanation of Assertion If Assertion is true but Reason is false If both Assertion and Reason are false Assertion: At climax age, perfect equilbrium between abiotic and biotic components of area cannot be observed. Reason: This is due to autogenic and allogenic succession.

Write one important characterstics of ecological succesion.

What is food? What is holozoic nutrition?