Question

1. what characterizes an inexhaustible energy source?

it cannot be depleted by human use.
requires extensive fossil fuel use.
has limited availability.
pollutes the environment heavily.

Explanation:

An inexhaustible energy source is defined as a resource that is not depleted by human consumption, unlike finite fossil fuels. The other options describe characteristics of non-renewable, exhaustible energy sources.

Answer:

It cannot be depleted by human use.