DCA 4 part 2 Humans and water

DCA 4 review part 2
Humans and water

Multiple Choice

Pollution that comes from a single source....

• Point

• Nonpoint

Multiple Choice

What is the role of vegetation in a watershed?

• Vegetation increases erosion, degrades water quality, and disrupts water flow.

• Vegetation reduces erosion, improves water quality, and regulates water flow.

• Vegetation causes excessive erosion, worsens water quality, and disrupts water flow.

• Vegetation has no impact on erosion, water quality, or water flow.

Multiple Choice

The boundaries of a watershed are determined by ___________

• Elevation

• Soil type

• The amount of water that flows

• The kinds of organisms found in the area

Multiple Choice

Snow melts in parking lots and carries oils into nearby waterways.

• Point

• Nonpoint

Multiple Choice

Can you provide examples of nonpoint source pollution?

• 
  Industrial discharges directly into water bodies

• Proper waste disposal in designated areas

• 
  Oil spills from ship

• 
  Examples of nonpoint source pollution include runoff from agricultural fields, urban runoff, and atmospheric deposition of pollutants.

Multiple Choice

Rapid growth of algae in a pond is often the result of -

• loss of habitat due to commercial building.

• flooding that causes water levels to rise.

• excess nutrients from fertilizer runoff.

• clogged river tributaries entering a lake.

Multiple Choice

A neighborhood in a small Texas town had to be evacuated because the houses were sinking due to a problem in the aquifer. What is the most likely cause of this problem?

• Heavy rains caused oversaturation of soil foundations.

• Overbuilding in the area polluted the ground water.

• Runoff from fertilized land created a dead zone.

• Excessive removal of water weakened the ground.

Multiple Choice

Pollution _________________________.

• is harmful materials put into the environment
• found in air, water, and land
• effects plants, animals, and people
• All of the above

Multiple Choice

How does agricultural runoff contribute to water pollution?

• Agricultural runoff contributes to water pollution by carrying fertilizers, pesticides, and animal waste into water bodies.

• Agricultural runoff contributes to water pollution by promoting the growth of beneficial aquatic plants.

• Agricultural runoff contributes to water pollution by increasing the pH levels in water bodies.

• Agricultural runoff contributes to water pollution by reducing the oxygen levels in water bodies.

Multiple Choice

One of the biggest sources of pollution is called "Nonpoint Source Pollution" caused by...

• Ocean acidification

• runoff

• Excess carbon dioxide in the atmosphere

• The overgrowth of algae

Multiple Choice

Animal wastes that runoff into water is an example of which types of pollution?

• bacterial & chemical 
• chemical & sediment
• nutrient & bacterial 
• sediment & nutrient

Multiple Select

Using the image as a reference, which human activities will negatively affect the nearby water?

Select all correct answers.

• Runoff, containing fertilizer from the farm, photosynthesizes and causes algae blooms.

• Stormwater flows into the river.

• Students can plant trees and tall plants near shorelines.

• The factory's smokestacks release pollutants into the atmosphere, that will mix with rain and fall back to Earth soaking into the groundwater

• The city manager implemented a water conservation policy.

Multiple Choice

What can agricultural run-off from farms contain?

• Pesticides and fertilizers

• Industrial waste

• Plastic debris

• Toxic metals

Multiple Choice

A liquid or gas is able to filter gradually through a surface or substance.

• percolate

• aquifer

• condensation

• run off

Multiple Choice

An increase in plant life like algae in water causes...

• Increase death of other living things

• Increase in fish

• Decrease in decomposition

• Increase in shrimp

Multiple Choice

What is the cause of the Gulf Dead Zone

• Oxygen from plants

• Oxygen from algae

• Nitrates from fertilizers

• Nitrates from clothes washing soap

Multiple Choice

What is the main cause of excess nutrients leading to dead zones?

• Volcanic eruptions

• Human activities

• Natural disasters

• Solar flares

What causes a Dead Zone?

​When there are excessive amounts of nitrogen and phosphorus in the water, algae can bloom to harmful levels. Dead zones form when the algae die, sink to the bottom, and are decomposed by bacteria—a process that strips dissolved oxygen from the surrounding water.

Multiple Choice

What might cause an increase in algae?

• excess fertilizers used on crops

• humans pouring algaecide in rivers

• erosion

• animal waste in our surface water

Multiple Choice

What is the role of oceans in regulating Earth's climates and weather?

• Absorbing and releasing heat energy

• Causing hurricanes and tornadoes

• Creating deserts and rainforests

• Producing greenhouse gases

Multiple Choice

What is the primary mode of transportation for goods and products between countries?

• Air transport

• Rail transport

• Road transport

• Shipping routes throughout the ocean

Multiple Choice

What happens on the land that affects the quality of the water in an estuary?

• Fertilizer and pesticide runoff from agricultural areas

• All of the above

• Runoff from impervious surfaces like parking lots

• Wastewater discharges from industrial facilities

Multiple Choice

What percentage of Earth's surface is covered by the water of the ocean system?

• Less than 3%

• More than 70%

• Less than 50%

• More than 80%

Multiple Select

What are three ways humans depend on the ocean?

• Teleportation

• Transportation

• Goods

• Recreation

Multiple Choice

More than half of the world’s oxygen is produced in the ocean by aquatic plants and photosynthesizing bacteria.

• True

• False

Multiple Choice

The impact of overfishing on the ocean is:

• Increased biodiversity

• Decrease in fish populations

• Improved water quality

• Growth of coral reefs

Multiple Choice

Trash affects ocean organisms by:

• providing nutrients

• causing harm and pollution

• creating habitats

• having no effect

Multiple Choice

Aquaculture is the practice of raising aquatic organisms in controlled environments. How does it impact the ocean?

• It has no impact on the ocean.

• It only benefits the ocean ecosystem.

• It can lead to pollution and habitat destruction.

• It is the primary cause of ocean acidification.

Multiple Choice

What process allows humans to drink ocean water, by removing the salt?

• Aquaculture

• Osmosis

• Desalination

• Aquifers