Aldosterone increases the of sodium ions bringing more back into the blood

Structures in cells that carry out specific functions.

Draw the structure of dna nucleotide with adenine as nitrogenous base

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.