Which statement best describes a hypothesis? O A. It must be true,
B. It must be testable,
O C. It must be a theory.
O D. It must be permanent.

Look at the following answer choices and determine which belongs in the both category. testable, can be disproven explains natural phenomena, has evidence to support it prediction, tentative, one or more scientists working together well established, many different scientists working independently, highly reliable

What were the main components of earth’s earliest atmosphere? oxygen and ammonia hydrogen and helium oxygen and nitrogen hydrogen and nitrogen

The body of water found at number 4 on the map above is the