Four different insect mouthparts are shown. Which is best adapted for chewing leaves?

W
X
Y
Z

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 cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.