Taden has found a table of the atmospheric layers of the Sun. However, he can’t make out the names of the layers in the chart. A 4 column by 3 row table. Column one is untitled with the following entries: Position, Thickness, Temperature. Column 2 is titled A with the following entries: Lowest, 100 kilometers, 5,500. Column 3 is titled B with the following entries: Middle, 2000 kilometers, 6,000 to 20,000. Column 4 is titled C with the following entries: Outermost, Millions of kilometers, 2,000,000.What are the names of the Sun’s layers described in columns A, B, and C?

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

Which of the following is the best definition for the process of photosynthesis? a.) plants digest sugars to make energy. b.) plants use oxygen and glucose to make carbon dioxide. c.) plants use sunlight and carbon dioxide to make sugars. d.) plants use sunlight to make chlorophyll and chloroplasts.

The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.