How would this food web be affected by the extinction of the Osprey?

The fish would grow in the population, because osprey mainly eat fish.

Because of the fish growth, the ocean, pond, or whatever, makes the water have less oxygen. The fish eat small fish, crustaceans, worms and almost anything that is not poisonous to them. These populations will decrease.

Because there are no Ospreys, the raccoons will get hungry too, as they sometimes eat Osprey eggs.

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.

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.