Nutrient Flow in an Ecosystem Is

question 56

Multiple Choice

Nutrient flow in an ecosystem is:

• A) bi-directional.
• B) cyclic.
• C) semi-conservative.
• D) top down.
• E) unidirectional.

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Definitions:

Hemispheres

Pertains to either of the two halves of the brain or Earth, usually referred to as the Northern, Southern, Eastern, or Western hemispheres.

Neuron Cell Bodies

The part of a neuron that contains the nucleus and is essential for its function and survival.

Sensory Neurons

Neurons that are responsible for converting external stimuli from the environment into internal electrical impulses.

Myelin Sheath

Insulation around some nerve cell axons that allows nerve impulses to move more quickly through the axons.