Answer:
Autotrophs
Explanation:
Ex. Plants (Autotrophs) gain energy from the sun and turn it into and produce oxygen (Chemical energy)
The last one, the planets formed at the same distance from the sun.
Apoptosis is important for programmed cell destruction when a cell begins to grow abnormally, or when cells become inefficient at completing the cell cycle and providing the specific set of functions to the organism.
(cancer/abnormal cells, and old cells)