What could be done to minimize the negative effects that humans have on ocean systems?

A. Set limits on fishing based on current fish populations and their ability to repopulate through growth and reproduction.
Correct! Setting limits on fishing would prevent overfishing.

B. Increase the revenue of the fishing industry by allowing unlimited accesses to fishing.
Incorrect. If unlimited access to fishing we allowed this would result in overfishing.

C. Allow industry open access to dumping waste in the ocean.
Incorrect. Dumping of waste into the ocean would have a negative impact on the ocean system.

D. Increase the acidity of the ocean and the amount of carbon in the atmosphere by allowing the use of fossil fuels.
Incorrect. Increasing the acidity of the ocean and the amount of carbon in the atmosphere would have a negative impact on the ocean system.

Which of the following is a way runoff affects ocean systems?

1. Natural fertilizer from ranching operations can enter runoff.
2. Pesticides from aerial spraying of crops can be washed downstream.
3. Farming practices can cause soil to erode and enter runoff.

A. I only
Incorrect. Natural fertilizer is a way runoff affects the ocean system but are there other ways runoff affects the ocean system?

B. II only
Incorrect. Aerial spraying of pesticides on crops is a way runoff affects the ocean system but are there other ways runoff affects the ocean system?

C. II and III only
Incorrect. Both aerial spraying of pesticides on crops and farming practices are ways runoff affects the ocean system but are there other ways runoff affects the ocean system?

D. I, II, and III
Correct!

What is one way humans positively affect the ocean system?

A. Increasing the amount of runoff in the oceans
Incorrect. Runoff is a way humans negatively impact the ocean.

B. Building artificial reefs in the ocean
Correct!

C. Developing the coast line
Incorrect. Habitat destruction is a way humans negatively impact the ocean.

D. Overfishing the ocean
Incorrect. Overfishing is a way humans negatively impact the ocean.

Which of the following statements is a description of how humans are dependent on the ocean?

1. The ocean is a mechanism for transportation and trade.
2. The majority of our drinking water comes from the ocean.
3. The majority of our nitrogen supply comes from the ocean.
4. The ocean is a major source of food and medicine.

A. I and II
Incorrect. Transportation, trade, and drinking water are ways humans are dependent on the ocean, but is there another way humans are dependent on the ocean listed here?

B. II and III
Incorrect. Drinking water is a way humans are dependent on the ocean systems but the ocean does not produce nitrogen.

C. I, II, and IV
Correct!

D. I and IV
Incorrect. Transportation, trade, food, and medicine are ways humans are dependent on the ocean, but is there another way humans are dependent on the ocean listed here?