As lungs expand and fill with air, the diaphragm lowers enabling for the lungs to spread and for more air to enter. When you exhale, the diaphragm retracts and helps push out CO2 out of the lungs.
Answer:
The answer is B
Explanation: Photosynthesis and respiration takes place in the light. Once it turns dark Photosynthesis stops but respiration does not.
Answer: C) 3
Explanation:
If you work through the punnet square for the two rabbits, only four of the sixteen possibilities has red eyes, and only three of those four has gray fur as well. So, three of the 16 rabbits have gray fur and red eyes.
Its only to upward an downward I believe