Which of the following can fix nitrogen?

Answer

A. human industrial processes

B. lightning

C. certain bacterial species

D. all of the above

Why would too much salt intake cause someone to develop high blood pressure?

What branch of earth science studies the Great Lakes A. Hydrology B. Volcanology C. Meteorology D. Astronomy

The brain, {blank}, and nerves are made up of nervous tissue.

You are a running in a race. What is one feedback mechanism that happens as you increase exercise and muscle activity?

What is the mass percent of oxygen in barium perchlorate?

While the bones of this joint may fracture, they rarely become dislocated. The articular capsule and accessory ligaments of this joint make it one of the strongest structures in the body.

A 5-year-old girl catches the flu from a friend at day care after the friend sneezed and wiped mucus on a toy that the girl played then with. In this case, what is the portal of exit in the chain of infection?

Why does a tiger look so much different as an adult

Why do you think some nerve cells are long and thin?

What is the name of the macromolecules that makes up DNA