B- Enzymes act as catalysts to speed up chemical reactions
Water. the only 4 macromolecules are nucleic acid, carbohydrate, lipids, and protein
Initially, when scientists were first using the taxonomy system to classify living organisms there were only considered to be 2 kingdoms: plants and animals. However, when the microscope was invented, scientists were able to observe differences in organisms at the cellular level! They were also able to observe microscopic living organisms like bacteria that they had not been able to observe before. Scientists realized it was necessary to add 4 new kingdoms to account for the observations they had not seen before the invention of the microscope.
Answer:
B. Release body heat
Explanation:
Jackrabbits live in deserts, and therefore must release excess body heat through the surface area of their ears to avoid quickly overheating and dying.
