How are framework silicates different from the other silicate-mineral arrangements? 1 They bond to four other tetrahedra.
2 They bond with any other silicate.
3 They bond only with oxygen.
4 They bond in cubes.
5 Item at position

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

20 the compound al(nh3)2 has atoms of nitrogen.

Why is it to call the calvin cycle the light independent reactions vs the dark reactions