Answer:
Top soil
Explanation:
It keeps all of the others below. we are able to plant and grow things on it.
Answer:
Plants need water, so that their guard cells can fill up and become turgid which would allow the stomata to open and gas to exchange. If there is not much water, not much gas exchange can occur hence not much Carbon dioxide can be taken in.
Explanation:
1. Family 2. Order 3. Class 4. Kingdom
If someone is aware of their actions on the environment that gives them the opportunity or the ability to change what their actions are there for bettering the environment
Sperm must be deposited and transported to the site of fertilization. Ovulation must occur and the egg must be "picked up" by the tube. Union between the sperm and egg must result. The embryo must implant and begin to grow in the uterus.