The answer you are looking for is True
The green house effect is a natural process that warms the Earth surface.
((Carbon dioxide))
4. All of the above.
5. Some plant-like protests undergo sexual reproduction.
6. Animal-like protists with a flagellum.
7. True.
Answer:
No, they only respond to a signal if they have a receptor that can receive the signal.
Explanation:
A concentration gradient must exist. hope this helps
