1)why stomata genrally opens during day time ? 2)which parts of plant intake CO2 and give out O2 , takes in O2 and give out CO2 during day time ?

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm

Which of these definitions have been paired with the correct type of cell?