Fill in the missing individual labeled X in generation II. Explain your answer. Complete the X in your workbook and explain to the right.

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation:

d. changes in climate and historical records

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