Watersheds Warm-Up

What part of the river would have the least pollution?

• X

• Z

• Y

What part of the river would have the most pollution?

• X

• Z

• Y

Which city will have the most polluted water?

• City A

• City B

Which city will have the least polluted water?

• City A

• City B

How do the oceans contribute to the amount of Oxygen in the Earth's atmosphere?

• Fish in the ocean produce oxygen.

• Phytoplankton in the ocean produce oxygen through the process of respiration.

• Phytoplankton in the ocean produce oxygen through the process of photosynthesis.

Which of the following is NOT a source of pollution in the ocean?

• Fertilizers used on land.

• Sand drifting along the bottom of the ocean floor.

• Oils found on city streets.

• Emissions from gas-burning vehicles.

The largest source of pollution in the ocean comes from (a)   .

• Runoff
• Acid Rain
• Wind

How do humans destroy reefs? (a)  

• Overfishing
• Pollution
• Both

Water that is found underground in the cracks and spaces in soil, sand and rock is called:

• Groundwater

• River

• Surface water

• Snow

What is the upper boundary of the zone of saturation?

• Alluvial plain
• Evaporation
• Nitrates
• Water Table