Lithosphere: rocks and minerals
Hydrosphere :different forms of water
Atmosphere: oxygen and gases
Cryosphere: Ice
Biosphere: plants, animals and humans
Answer:
The hare population decreases.
Explanation:
Answer:
The correct answer will be option-C
Explanation:
The rhythm of the heartbeat is controlled by the pacemaker of the heart called the sino-atrial node.
The SA node generates action potentials which trigger the contraction and relaxation of the atrium and ventricles. The membrane potential generation initiates by the depolarization of the cell membrane when the L type of Ca⁺² ions opens up and calcium ions enter the cell.
This depolarizes the cell until the potential threshold is reached which lies between the -40 and -30 mV.
Thus, Option-C is the correct answer.
Small intestines. <span>Although some </span>digestion<span> begins in the stomach, </span>most digestion<span> and absorption </span>take place<span> in the small intestine. The purpose of the small intestine is to finish </span>digestion<span> and absorb nutrient.</span>
Products are released from the active site of an enzyme during a chemical reaction. Active sites directly bind to the substrates and carry out the reaction. It is this site, where product if formed, and after completion of the reaction, are released. It possesses catalytic group for making and breaking the bonds, for carrying out the reaction.
