The immune system is a network of cells, tissues, and organs that
(a) remove waste
(b) defend the body
(c) get energy
(d) take in oxygen

What’s this animal (picture is tagged) and where is it most likely to live, rainforest or desert?

Aflashlight produces light using energy from the batteries. in which order does the energy change form? a. from chemical to electric to light energy b. from electric to light to chemical energy c. from electric to chemical to light energy d. from light to electric to chemical energy

Phosgene is a chemical agent that is formed by decomposition of chlorinated hydrocarbon solvents by ultraviolet radiation. a. false b. true