Complete each sentence using the drop-down menus.

Question

Desertification mainly impacts
resources.

Point and nonpoint sources refer to types of
pollution.

The process of people moving to cities, called
, greatly impacts land, air, and water resources.

The burning of fossil fuels can cause
.

Answer 1

Desertification mainly impacts land resources.

Point and nonpoint sources refer to types of water pollution.

The process of people moving to cities, called urbanization, greatly impacts land, air, and water resources.

The burning of fossil fuels can cause air pollution.

Answer 2

3 is smog and acid rain? or acid rain and runoff

Answer 3

In the context of pollution sources:

• "Smog" is typically associated with air pollution that can result from urbanization but is not a direct process related to moving to cities.
• "Acid rain" is primarily caused by emissions from burning fossil fuels and can be a result of industrial activities, but it's not specifically about urbanization.
• "Runoff" is related to water pollution, particularly from nonpoint sources, and is influenced by urbanization as impervious surfaces increase in cities.

So, if you're looking for the term that references the impact of urbanization on resources related to water quality, "runoff" would be more accurate than "smog."

If your choices are between "smog and acid rain" or "acid rain and runoff," choose "acid rain and runoff."

Answer 4

The burning of fossil fuels can cause
✔ smog and acid rain
.

Which activities are ways to reduce the negative impacts humans have on Earth’s resources? Select two options.

eroding river banks
moving to urban settings
monitoring air quality
burning fossil fuels
building marine refuges

Answer 5

The two activities that are ways to reduce the negative impacts humans have on Earth’s resources are:

1. Monitoring air quality - This helps to identify pollution sources and encourages actions to improve air quality.
2. Building marine refuges - This protects marine ecosystems and biodiversity, helping to sustain resources and mitigate human impacts on marine environments.

The other options, such as eroding river banks, moving to urban settings, and burning fossil fuels, generally contribute to environmental degradation rather than reduce negative impacts.

Answer 6

Commercial fertilizers, which are made by humans, are used to enrich soil for healthier crops. However, erosion may carry the fertilizer chemicals to the oceans. The presence of these chemicals may cause certain kinds of algae to reproduce rapidly. This decreases the amount of oxygen in the water, which can cause organisms that depend on it, like fish, to die.

Which statements describe the impact of the use of fertilizers? Select two options.

It improves the growth of crops.
It provides more food for fish.
It causes erosion and washes away soil.
It causes the death of crops.
It harms organisms that live in the oceans.

Answer 7

The two statements that describe the impact of the use of fertilizers are:

1. It improves the growth of crops. - This is a primary purpose of using commercial fertilizers, as they provide essential nutrients to enhance crop health and yield.

2. It harms organisms that live in the oceans. - The runoff of fertilizer into oceans can lead to harmful algal blooms, which can decrease oxygen levels and harm marine life, including fish.

The other options, such as providing more food for fish and causing the death of crops, are not accurate in the context of the described effects of fertilizer use.

Answer 8

The best action humans can take to decrease the effect of harmful growth and reproduction of algae is to

ban the use of fertilizers.
decrease crop production.
control the use of fertilizers.
use other chemicals.

Answer 9

The best action humans can take to decrease the effect of harmful growth and reproduction of algae is to control the use of fertilizers.

By controlling the use of fertilizers, humans can reduce nutrient runoff into water bodies, which is a significant factor in the excess growth of algae (eutrophication). This can involve practices such as applying fertilizers more judiciously, adopting buffer zones, and using sustainable agricultural practices.

Answer 10

Sand dunes.
Sand dunes protect beaches against erosion and flooding due to storms.

Which human activity would have the most negative impact on dune grasses and the coast?

driving vehicles along the beach
building houses near the beach
walking on the dunes of the beach
allowing kids to play on the beach

Answer 11

The human activity that would have the most negative impact on dune grasses and the coast is driving vehicles along the beach.

Driving on the beach can cause significant damage to dune ecosystems, compaction of the sand, disruption of plant growth, and increased erosion, all of which can negatively affect dune grasses and contribute to the degradation of coastal environments. While other activities like building houses or walking on the dunes can also have impacts, driving vehicles is particularly damaging due to the physical disturbance it causes.