Which statement describes a similarity between the calcium pump and the sodium-potassium pump? both pumps move substances from high concentration to low concentration. both pumps only move substances into cells. both pumps require no energy to function. both pumps use proteins to transport substances across the cell membrane.

The correct answer is both pumps use proteins to transport substances across the cell membrane.

Explanation:

Sodium potassium pump helps in the active transport or uphill transport of both sodium and potassium across the cell membrane against their concentration gradient.

  Whereas Ca2+ATPase or calcium pump itself is a trans membrane or membrane spanning protein which helps in the transport of Ca2+ outside the cell to maintain electrochemical potential of Ca2+ ions.

if the hares very faster than they are now, and thus the lynx's hunting success rate drops because it will be harder to catch them, the rate that will change will be the pray-rate. the pray-rate will change because more hares will be able to survive, thus more individuals for reproduction, so the end result will be increasing population of hares.

the predator-rate will remain pretty much the same because there will be more than enough pray, but the hunting success rate is stagnant.