Question

the graphic is a grassland in africa. what best describes it?
a closed system with regards to energy
a closed system with regards to matter
an open system with regards to energy and matter

Explanation:

An African grassland (ecosystem) exchanges energy (e.g., solar energy, heat) and matter (e.g., nutrients, water, organisms moving in/out) with its surroundings. A closed system doesn’t exchange matter/energy, but grasslands get energy from the sun, water from rainfall/rivers, and have organisms migrating, so it’s open for both energy and matter. The first two options are incorrect as grasslands aren’t closed for energy or matter.

Answer:

an open system with regards to energy and matter