Which best describes the mitochondrion of a cell?

Guess my answer becomes fruitful for you

Explanation:

Mitochondria are an organelle that is found in large numbers in most cells. They are found where the biochemical processes of respiration and energy production occur. Mitochondria have a double membrane in which the inner layer is folded inward to make multiple layers. ... This is done through respiration.

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.