The motions of which two of Earth's layers help protect the organisms on Earth's surface from harmful solar radiation?
ASAP PLEASE!

What major factors play a role in global warming? 1. human activity and normal climate conditions 2. natural factors and human activity 3. normal climate conditions and abnormal human activities 4. abnormal human activities and natural factors

How did the korean war impact the elections of 1952?

Which season occurs in the northern hemisphere when the sun is at its lowest point in the sky