In a plant s stem, the vascular tissue (1 point)is always arranged in rings of vascular bundles. is continuous from the roots to the leaves. carries nutrients up the stem but not down. plays a role in photosynthesis and storage

Write a paragraph at least 5 sentences “why all vaccinations should be mandatory”

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.

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the