Air contains 78 percent, nitrogen 21 percent oxygen, and one percent argon. which gas is the solvent?

oxygen

nitrogen

argon

none of the above

Match the examples to the correct level of organization. 1. system level roses, snakes, puppies 2. organism level roots, stamens, leaves 3. tissue level bone, cartilage, blood 4. organ level heart, veins, arteries

According to this food web which of the following would be considered primary consumers

To maintain asepsis when administering an injection, all parts of the syringe can be handled except the: