Most people recognize biodiversity by species—a group of individual living organisms that can interbreed. Examples of species include blue whales, white-tailed deer, white pine trees, sunflowers, and microscopic bacteria that can't even be seen by the naked eye.
Transporting substances in a cell. proteins are transported either in or out of the cell.
The four types of macromolecules in cells are nucleic acids, lipids, proteins, and carbohydrates.
B. xylem and phloem. they transport water and nutrients throughout the plant
