D, populations are able to adapt easier to seasonal changes than natural disasters
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The given blank can be filled with medulla.
The medulla also called the medulla oblongata is the segment of the brainstem that is factually the stem, which elongates from the brain. The medulla is positioned below the pons and above the spinal cord and is a major relay intersection for information conducted to and from the spinal cord and the brain. This section of the brain is a monitoring center for circulation and respiration.
The food chain is a system in which food is connected with the ecosystem. Ex:composers, producers, decomposers,etc.