One of the simplest ways to conserve energy is to use light. natural

fluorescent

energy efficient

artificial

1. dermis

2. chemical

3. urine

4. viruses

5. antibodies

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.

the answer would be d : p

the sun's light combined with the visible wavelenghts form what is called ultraviolet radiation, which are the long waves at the end of a visible light sprectrum.

hope it ,

bioteacher101