What defines a climate zone? An area that has similar average temperatures and precipitation throughout An area that has the same types of plants and animals throughout The average temperature and precipitation in an area over a long period of time The weather conditions in an area at a certain time Please hurry i only have 5 mins

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling

Consider the model of the oxygen cycle on earth. the majority of earth's oxygen reservoirs are found in the a) atmosphere. b) biosphere. c) hydrosphere. d) lithosphere.

Asap. this question is 100 points if you answer it question: describe the basic relationship between ocean depth and temperature seen in the graph