What is the cycle that involves the conversation of nitrogen gas into a usable form by bacteria?

A. Carbon cycle

B. Nitrogen cycle

C. Water cycle

D. None of the above

What has depression to do with the nervous system

What term describes the competitive buildup of weapons systems?

Which process is defined as breaking down rocks into smaller pieces without changing the rocks compositions

Which rocks will likely weather the least? rocks that are soft rocks with a porous surface rocks that are in a dry climate rocks with minerals that dissolve easily

How do we think dogs came to be what they are today

What is the definition of chemical energy

Define and give three examples of a population

Harmless bacteria are what type of bacteria? Milady chapter 5

Which kind of action is a cause of air pollution? A. Poisons are released into a major river. B. Gasoline is burned by a car engine. C. Trash is dropped in a national wildlife preserve. D. Tuna are fished to extinction.

Which questions can be answered using the scientific process