What is one major obstacle to development in some african nations?

a. the effectiveness of peacekeeping troops

b. the presence of ngos

c. lack of stable governments

d. an overabundance of resources

The length of the path between two points is what

How can you use a maps legend to plan your travel

What can happen to solar radiation when it enters earth’s atmosphere? check all that apply. it is absorbed by earth. it is reflected by clouds. it is reflected by glacial ice. it is condensed into visible light. it is amplified by water molecules.