Answer: coal
Explanation: coal is formed when layers of peat are compressed by the layers of rocks above.
ANSWER:
In the animal kingdom mammals have largest natural breasts.
EXPLANATION:
Mammals have largest breasts in animals and specifically Blue Whale has the largest breasts but they are inside the body.Among other animals goats, cows and buffaloes have larger breasts too but surely not greater than the size of Blue Whale's.Breasts are organs in which mammary glands are present, these glands produce milk.
Answer:
Autotrophs
Explination: They are called this because they use the energy and simple inorganic compounds to produce organic molecules.