How is relative-age dating used to determine the ages of fossils? Group of answer choices

A. by estimating the number of fossils in a particular region

B. by identifying the way the fossils were formed

C. by using radioactive isotopes

D. by the formation of igneous rocks

E. by observing the formation of sedimentary rocks

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How is the male reproductive system different from other body systems? it isn’t necessary to vital signs. it monitors other body systems, and adjusts if necessary. it transports items from one system to another. it is the only system that produces hormones in the male.

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.

Name the organs of humanelemintary canal.