Is coal biotic or abiotic

Quais sao os principais tipos de erosão e como estes modificam o relevo.

Which of the following statements is true? -Coal, oil, and natural gas are renewable energy sources. -A mineral's hardness is its least informative property. -Conglomerates are formed from regional metamorphism.

What were the emperors of the Russian called?

Why is Africa north of the Sahara studied separately than Africa south of the Sahara?

The suns energy is made up of

Why is Dubai creating underwater resorts and reclaimed islands? Dubai has an incredible amount of money to spend on building projects. Dubai's population is growing at a very fast pace, some say too fast.

Where was the maya civilization located

The widespread presence of banana plantations in central america region has resulted in increased standard of living

Which of these has been the result of human activity? a) glaciers melt more b) volcanoes erupt more landslides happen more d) earthquakes happen more

Which types of stars have extremely intense gravitational and magnetic fields?