Complete the following sentence: Focused research on oil pollution toxicity to fish began in earnest in 1989, after the "Exxon Valdez" tanker struck a reef in Prince William Sound, Alaska and spilled approximately 11 million gallons of crude oil into the surrounding water. Complete the following sentence: Focused research on oil pollution toxicity to fish began in earnest in 1989, after the "Exxon Valdez" tanker struck a reef in Prince William Sound, Alaska and spilled approximately 11 million gallons of crude oil into the surrounding water. <unk> <unk> <unk>
Exxon Valdez oil spill was the largest in the history of the United States.<unk> Exxon Valdez oil spill was the largest in the history of the United States. There were many adverse ecological impacts of the spill including the loss of the loss of billions of Pacific herring and pink salmon eggs.<unk> There were many adverse ecological impacts of the spill including the loss of the loss of billions of Pacific herring and pink salmon eggs.<unk> There were many adverse ecological impacts of the spill including the loss of the loss of billions of Pacific herring and pink salmon eggs. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Pacific herring spawn in the intertidal and subtidal zones, making the vulnerable eggs easily exposed to pollution.<unk> Pacific herring spawn in the intertidal and subtidal zones, making the vulnerable eggs easily exposed to pollution.