With less oxygen there is less carbon dioxide being produced for the plants so photosynthesis decreases.
Answer:
The correct answer would be - 38 calories.
Explanation:
Ions! Hope this helped! :))
Answer:
Blood is carried away from the heart by arteries. Blood that is rich in oxygen. Blood that is low in oxygen is returned to the heart by veins. there is more pressure in arteries than in veins.
