A scientist is studying the living and nonliving things that form a forest. What is the scientist studying?
Select one:

A community.

An ecosystem.

A population.

An organism.

Which layer surrounds the center of the earth? a: crust b: core c: mantle

Many countries in africa have had difficulty creating democratic governments following their independence. all of the following issues have most likely contributed to this problem, except

Which african region relies on the production of oil phosphates and natural gas as its main economic activities