Mud is composed of:

a. dirt and water.
b. iron and diatoms.
c. clay and silt.
d. calcareous and siliceous ooze.
e. sand and clay.


C

Biology & Microbiology

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The total amount of energy trapped by the autotrophs of an ecosystem is called

A. gross primary consumption. B. net energy fixation. C. net primary consumption. D. net primary production. E. gross primary production.

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Electrical signals travel faster down unmyelinated axons than myelinated axons

Indicate whether the statement is true or false

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