Question

A researcher observing an ecosystem describes the amount of sunlight, precipitation and type of soil present. Which factors is the researcher most likely describing?
Biotic factors in a forest.
Biotic factors in a tundra.
Abiotic factors in a prairie.
Abiotic factors in a coral reef.

Answer 1

A researcher observing an ecosystem describes the amount of sunlight, precipitation, and type of soil present. The researcher is most likely describing abiotic factors in a prairie. 
A and B are incorrect because the factors described are abiotic, not biotic.
Di is incorrect because abiotic factors listed include soil, which is not likely to be described in an ocean environment.