Molecules only move across the blood - air barrier if there is a difference in concentration.
So I think that nothing would happen!
Answer:
A
Explanation:
Correct answer is
A.) No. Theories can be refined and improved over time, but cannot become scientific laws.
Answer:
D
Explanation:
Im not exactly for sure on this one, but if i were you, i would choose either A or D . Homeostasis is like the normal for something when they it isnt sick. Its when they are doing good with not really any concerns!
Answer: Mesopotamia, china, indus River Valley, the mesoamerican empires..... in this case, the two rivers are the tigris and Euphrates. Mesopotamia. The name Mesopotamia was given to the middle eastern civilizations that existed between the Euphrates and Tigris Rivers. :)
