Answer:
I think the answer is likely A
The answer is 4 chemical energy from the grass.
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Density is a derived unit because it's not reported as a pure unit. (A pure unit would be something like kilograms or meters.) In contrast, the units for density are kg/m3. Density is the ratio of mass to volume; mass has the unit 'kilograms' (kg) and the unit for volume is cubic meters (m3).
Density is an intensive property, which means the amount of the material is irrelevant. The density of a substance is constant.
It’s Wolf biologists are a specific type of wildlife biologist - a scientist employed to observe and study animal behaviors. In this case, their research and study are limited to wolves. They spend time in the field observing the wildlife and their interactions with each other, prey animals and the ecology.
