Answer:
The Mitochondria
Explanation:
Mitochondria are membrane-bound cell organelles that generate most of the energy required to power the cell's organic chemistry reactions. Energy created by the mitochondria is kept in a tiny molecule known as adenosine triphosphate (ATP).
the spiral type of galaxy
The smallest unit of a compound is a molecule, which is made up of atoms held together by bonds.
sample A
the first one because of the ppm value
the. correct option is d