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When Europeans first began enslaving Africans, how did they justify the practice?

What is hypoxia?

Which factor in the ocean is key in determining environmental conditions?

Refer to Infographic 7. How much water is lost through free drainage in mm? What was the approximate end-of-season yield in metric tons per hectare for crops grown in controlled drainage conditions?

Use the following scenario to answer the next following question(s):You and your friends go to the beach for vacation. You all walk down to the beach to go swimming. When you get there, you see the water is murky and green, and there are algae blooms floating on top. You decide to help improve the water quality in a river upstream that feeds into your beach. Your suggestion is to plant a buffer zone of vegetation close to a river to slow runoff and increase the health of the watershed feeding the waters at your beach. Which effect would be a benefit of your suggestion?

What is hypoxia?

Which factor is NOT a source of human impact on marine ecosystems?

The lowering of the pH of the oceans is known as:

Which method is NOT an agricultural best management practice to reduce the amount of nitrogen and phosphorus in runoff waters?

Where can pollutants from a watershed end up?