Body fluids are drawn into the valved ostia
Answer:
a
Explanation:
called Pangaea (meaning "all lands"), and over time they have drifted apart into their current distribution. He believed that Pangaea was intact until the late Carboniferous period, about 300 million years ago, when it began to break up and drift apart.
Because the mouth breaks down the food and the stomach uses acid to break food down even more...
