Match each environmental change with its description. chemicals react with water and oxygen that enter water systems. arrowbothnutrients in excessive amounts enter water systems, causing algal bloom. arrowbotha high concentration of toxic chemicals is present in the bodies of animals at the highest trophic levels. arrowboth

it’s lava came from an explosive eruption

not sure if this is what you'r looking for nnew= nold

the answer to your question is tooth decay.

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.