Answer:
A.
Explanation:
Because the trait undergoes a secondary loss; it has been there but it doesn't always appear in all generations.
Model it literally says a plastic replica
They both can expel water from the polymer network
The smallest bone in the body is the stapes and it is the third bone of the three ossicles in the middle ear.
Answer:
All the organisms of one kind in an ecosystem are called a population. For example, a pond ecosystem might have populations of frogs, waterlilies, insects, duckweed, and protists. Populations living and interacting with each other form a community.
Explanation:
