Which organic molecule is not considered a polymer? * 1 point
O nucleic acids
carbohydrates
O lipids
O proteins

Fission of uranium-235 products energy and a. isotopes of smaller elements b. isotopes of larger elements c. lighter isotopes of uranium d. heavier isotopes of uranium

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?

Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness