Respiration uses oxygen to make CO2, which goes back into photosynthesis to make oxygen. The end products of each basically cycle back into each other.
Eukaryotic.
In prokaryotic cells, the dna is inside the cytoplasm
The enamel. For example lemon juice can destroy your enamel it’s like another way that protects the teeth but you should also protect the enamel.
C. because stimuli is how your body responds to something, and in this case, someone's heart rate increases WHEN their blood oxygen drop. Do you see how it responds? ;-)
It’s c direct effect on the pancreas hoped that helped