I think it's the simple columnar epithelium.
Answer:
The answer is- A). Because it takes tremendous effort to break free from the laws of gravity to exit the Earth's atmosphere.
Explanation:
I really don't have an explanation. Except that I love science and I actually pay attention in my classes.
Answer:
Coelenterates are the first invertebrates to develop a true nervous system.
Explanation:
Answer:
Cactus plants are able to survive in drier environment because they are able to store water for long periods.
Because types of chemicals in minerals need to form.