Living Organisms Use Oxygen to ________

question 2

Multiple Choice

Living organisms use oxygen to ________.

• A)reduce heat production
• B)donate electrons for cellular metabolism
• C)release energy stored in the molecules of food
• D)remove metabolic wastes

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Definitions:

Ecological Niche

The role and position a species has in its environment, including all of its interactions with the biotic and abiotic factors.

Trophic Level

The position an organism occupies in a food chain, defined by the number of steps it is from the primary source of energy.

Community Structure

The composition and arrangement of the biotic component in a particular area, often considering the diversity and abundance of species.

Species Richness

The number of species in a community.