What is true of diffusion?
a- diffusion is only important for animal cells
b- only water can diffuse across a cell membrane
c- diffusion requires energy input from the cell
d- molecules move from areas of high concentration to areas of low concentration

Which statement accurately describes the relationship between air pressure, air density, or altitude? as altitude increases, pressure increases. as altitude increases, air density increases. air pressure and density are lowest at sea level. denser air exerts more pressure than less dense air.

What approach is required to balance the objectives of sustainable development? balancing the objectives of sustainable development requires a(n) .

The conventional equilibrium constant expression (kc) for the system below is: 2icl(s) ⇄ i2(s) + cl2(g) [cl2] ([i2] + [cl2])/2[icl] [i2][cl2]/[icl]2 none of the listed answers are correct [i2][cl2]/2[icl]