Body fluids are drawn into the valved ostia
Answer:
B, the total population size
Explanation:
You have to go off of something to find the future population size. Hope that this helps you and have a great day :)
Answer:
To keep the earth safe and clean
Explanation:
If we keep the ocean clean then the water creaters will be able to live better, I mean how would you feel if someone was putting trash in your home., not so good huh. if you recycle your stuff like paper then frewer trees are cut down, yes they do plant one tree every time they take one, but it takes years for the oxygen to rebuild to the same leave, and without trees, not co2 and oxygen.