The 4 major earth systems are the atmospher lithosphere hydrosphere and geoshphere

Adeveloping nation's economy is based on a developed nation's economy is based on stay tuned- i may post some more questions from my study guide : )

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

Based on what you know about the location of the earth in relation to the sun, why is this called the goldilocks zone in other galaxies?