16. 1) Which of these is not needed by living organisms? A. space
B. gravity
C. air
D. water
E. energy

A. Space

Explanation:

You need gravity to stay on the planet and not drift off.

You need air to keep you alive.

You need water to keep you alive.

You need energy to do things like walk around, use your brain, etc.

Space

Explanation:

Living organisms need air, water, energy. Gravity is technically also needed since all living organisms on earth are accustomed to it.

human-caused climate hope this