Within the water cycles, where do individual water molecules reside the longest? in the ocean

in shallow groundwater

in deep groundwater

in the atmosphere

Which best describes red blood cells? a. they are colorless b. they protect against disease-carrying microorganisms c. they transport oxygen throughout the body d. they aid in blood clotting

Cell specialization occurs by the process ofa. reproductionb. differentiationc. maturationd. growth

Nucleic acid certain protein cell membranes certain carbohydrates