Cells extract energy from nutrients in a structure known as the powerhouse of the cell, or the . A
vacuole

B
cilia

C
nucleus

D
mitochondria

D

mitochondria

D ( Mitochondria )

Explanation: Cells extract energy from nutrients in a structure known as the powerhouse of the cell, or the mitochondria.

the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )