What would be a direct consequence of the disappearance of nitrogen-fixing prokaryotes? A. Dead organisms would not break down.
B. Nutrients such as carbon would not be recycled.
C. Food chains that depend on these producers for food would collapse.
D. Organisms would not be able to get the nutrients they need to make proteins.

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.

Me with biology endocrine system crossword also image left i need with hw

What processes take place before the mature mrna exits the nucleus?