Which of the following is an example of a qualitative observation? O A. Asian elephants tend to be smaller than African elephants.
B. The pill contains 5 mg of aspirin.
O C. The bottle holds 2.3 liters of water.
O D. The bridge can support 200 tons of weight.

Air pollution is only caused by human activity, select the best answer from the choices provided ot of true or false

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 best example best demonstrates the importance of having knowledge of evolutionary relationships? a. illustration of a plant b. organ transplantation between species c. blood donation from a human d. do you need sequence of an insect.