Solve the Proportion for the Variable by Cross-Multiplying

question 24

Multiple Choice

Solve the proportion for the variable by cross-multiplying.
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Definitions:

Heterotrophs

Organisms that obtain their energy by consuming other organisms, unable to synthesize their own food from inorganic sources.

Tertiary Consumer

An organism that typically eats secondary consumers, residing at or near the top of a food chain and usually a carnivore or an omnivore.

Ecological Efficiency

A measure of the energy transfer between different trophic levels in an ecosystem, typically representing how much energy from a lower level is available for use at the next level.

Trophic Level

The position that an organism occupies in a food chain, which is a measure of its feeding level.