Using the four components of natural selection, explain how PCB resistance became so common among the tomcod in the Hudson. Be sure to state yourclaim, provide
evidence from prior knowledge, and justify your reasoning.

For this question look at the hydropic diagram water that is heated by the sun evaporates. select the number that represents it.

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.