`what is 10% rule. what is its significance? why is energy lost?

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic

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.

Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?