Answer:
The cell membrane, therefore, has two functions: first, to be a barrier keeping the constituents of the cell in and unwanted substances out and, second, to be a gate allowing transport into the cell of essential nutrients and movement from the cell of waste products.
Explanation:
Act as a baseline to compare your data to
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.
D. To help oxygen get into blood vessels
Answer:
True
Explanation:
The peak of Mount Everest is made up of rock that was once submerged beneath the Tethys Sea, an open waterway that existed between the Indian subcontinent and Asia over 400 million years ago.
