If the eyepiece of a compound light microscope had a magnification of 10x and you are using 40x objective lens, what is the total magnification? A) 40x B) 400x C)4000x D) None of the above

How are the tortoises that darwin observed on the galápagos islands similar to the anoles that losos studied

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.

Explain how scientists use geologic time to determine the age of landforms.