Cells is a basic unit of life
Answer:
Earth was barren, flat and almost entirely under water 4.4 billion years ago
Explanation:
Fossil molds and casts preserve a three-dimensional impression of remains buried in sediment. Cast fossils occur when mold fossils are filled in with minerals that harden over time, creating a fossilized replica of the original organism. Mold fossil-A fossil formed when an animal, plant, or other organism dies and is covered by sediment, its flesh decays and bones deteriorate due to chemical reactions, and a cavity remains below the ground surface.
Because the water didn't disappear, it just evaporated and now is water vapor in the air.
Because there is little leaching.
