What region of the world has the most countries that rely solely on fossil fuels as their energy source? Group of answer choices

Europe

United States

Middle East

East Asia

In a scientific experiment, a is any factor that can be changed or be changed

Match the graph type to its description. 1. uses symbols to describe information pie 2. compares different quantities at the same point in time line 3. compares increases and decreases in a quantity over a period of time bar 4. shows the relationship of parts to each other and to the whole pictograph

Alow pressure system is formed when an air mass cools over a cool surface and sinks. true or false