Human Events and the Environment

Question 1

Predict the likely effect of continued deforestation on plant and animal life.

Revolt · Accepted Answer

Continued deforestation will likely cause the loss of plant and animals species, resulting in an increase in the number of endangered, extinct, and threatened species. This arises from the widespread loss of habitats that results from deforestation.

Question 2

Explain how the use of fertilizer can have a negative impact on the environment.

Revolt · Accepted Answer

Fertilizer can have a negative impact on the environment, because of its high nutrient content. When fertilizer enters waterways as runoff, it causes waterways to have an excess of nutrients. This excess of nutrients causes increased algae growth. When these algae decay, they deplete the oxygen in the water, negatively impacting organisms that rely on the oxygen in the water for survival.

Question 3

Polluted water can contribute to _______.a.droughtb.increased CO2c.deforestationd.glacial melting

Revolt · Accepted Answer

A

Question 4

Continued deforestation will most likely lead to _______. a. a decrease in the number of endangered species b. an increase in the number of endangered species c. an increase in the number of oil and chemical spills d. a decrease in glacial melting Please select the best answer from the choices provided

Revolt · Accepted Answer

B

Question 5

Sedimentation accumulation found in bodies of water can be the result of _______.a.fertilizer runoffb.pesticides and herbicidesc.erosion from agricultural practicesd.all of the above

Revolt · Accepted Answer

C

Question 6

Siphoning of wetlands in Iraq has led to _______.a.rising sea levelsb.droughtc.an increase in biodiversityd.them becoming arid desert

Revolt · Accepted Answer

D

Question 7

How does sedimentation affect bodies of water?

Revolt · Accepted Answer

Sedimentation causes increased turbidity, which results in lower levels of light being able to pass through bodies of water. This leads to lower plant production. Sedimentation, therefore affects the food web. Also, sedimentation leads to erosion and habitat loss. Sedimentation in wetlands can lead to a loss of wetland function, which includes the filtration of pollutants from water.

Question 8

Explain how tillage has negative effects on the environment.

Revolt · Accepted Answer

Tillage can cause an eventual loss of soil production. Tillage causes the movement of material in soil which can result in pollutants accumulating in top soil, where they can then be carried into nearby water sources. Tillage can also cause an increase in erosion rates, which leads to higher rates of sedimentation for local water sources. Soil quality is also decreased by the destruction of earthworm pathways and root channels caused by tillage.

Question 9

Fertilizer in waterways can lead to an increase in _______.a.nitrogenb.phosphorusc.algaed.all of the above

Revolt · Accepted Answer

D

Question 10

Explain how the Earth’s surface can change as a result of global warming.

Revolt · Accepted Answer

Global warming can lead to changes to the Earth’s surface through the melting of glaciers. This can lead to rising sea levels, causing flooding. Antarctica’s land mass is being decreased by the process.

Human Events and the Environment Answers

More from this Course

TRY EDGENUITY HACKS