In the lungs, gases move from an area of high concentration to
an area of low concentration from the alveoll into the blood by
what process?
Diffusion
Facilitated diffusion
c Osmosis

Name the part of the the brain labeled "e".

Which statement is the best summary of the model? a-a series of aerobic and anaerobic reactions take place in cells b- the sun's energy moves through trophic levels in a food chain c-light energy is converted into stored chemical energy plants. d- food molecules are broken down in the cells if living things.

Which number represents a basic ph, 4 or 9? numerical answers expected! answer for blank 1: i'll give