Release of cfcs and similar compounds are a possible cause of
a destruction of ozone in the upper atmosphere

b greenhouse gas build-up in the lower atmosphere

c increase in atmospheric carbon dioxide concentration

d acid rain in the northeast u. s.

Ozone depletion

Explanation:

Man-made compounds such as chlorofluorocarbons (CFCs), hydrofluorocarbons (HCFCs) and halons destroy ozone in the upper atmosphere (stratosphere). The stratospheric ozone layer makes life possible by shielding the earth from harmful ultraviolet (UV-B) rays generated from the sun.

segmentation=endoskeleton=backbone=coelom=tissues

after a the power stroke, adp is released, but the cross-bridge formed is still in place. atp then binds to myosin, moving the myosin to its high-energy state, releasing the myosin head from the actin active site.