The great rift valley in africa is what

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

The district of columbia could be eliminated completely if a majority of congress voted in favor of the action. a. true b. false

Hey, i was what is consisted in a sustainable city? like what unique designs they have, etc. for answering ; )