Do all pregnant woman undergo amniocentesis

No one is required to have this test. But an amniocentesis is generally offered to women in the following three categories But older woman like 35 and over are at higher risk of having a baby with chromosomal disorders

Explanation:

rocks and weathering-matching

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.