NAIMMCQ Oceanography Although nutrients in surface water are sometimes depleted by the rapid growth of organisms, deep water is often rich in nutrients. When ___________, which makes deep water rise toward surface, occurs, biological productivity increase.

Although nutrients in surface water are sometimes depleted by the rapid growth of organisms, deep water is often rich in nutrients. When ___________, which makes deep water rise toward surface, occurs, biological productivity increase.

Oceanography

Although nutrients in surface water are sometimes depleted by the rapid growth of organisms, deep water is often rich in nutrients. When ___________, which makes deep water rise toward surface, occurs, biological productivity increase.

a) downwelling
b) thermocline
c) pycnocline
d) upwelling

Answer: D

NAIMMCQ

Although nutrients in surface water are sometimes depleted by the rapid growth of organisms, deep water is often rich in nutrients. When ___________, which makes deep water rise toward surface, occurs, biological productivity increase.

Although nutrients in surface water are sometimes depleted by the rapid growth of organisms, deep water is often rich in nutrients. When ___________, which makes deep water rise toward surface, occurs, biological productivity increase.

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