Which is a reason that many organisms that have existed on Earth have left no fossils? A. Many organisms live only in rainforests.
B. Fossils cannot form underwater.
C. Fossils can only form near volcanoes.
D. Fossils decay according to their half-life.

Body temperature is tightly regulated in mammals for example when external temperatures drop too much the body of a mammal responds by in order to its core temperature?

How have high taxes on tobacco products impacted the number of people who use them? a. the number of tobacco users has increased. b. the number of tobacco users has decreased. c. the number of tobacco users has not changed. d. the number of adolescent tobacco users decreased, while the number of adult users increased

Climate warming trends allow plant and insect species to inhabit larger ranges. select the best answer from the choices provided