7.2.4

In some places, timber companies remove all the trees from entire hillsides when they are harvesting logs, and farmers till the soil in the fall and leave the ground bare of plants until it is time to plant in the spring. What is the most likely effect of doing either of these things?

• Plants will sprout better

• Erosion will happen faster

• Soil will stay cooler

• Decomposition will speed up

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Desertification occurs when relatively dry regions of Earth become increasingly dry due to the loss of its bodies of water. This is often the result of human activities. Which of the following impacts on the environment would result from desertification?

• Decreased air quality

• Increased temperatures

• Invasive species

• Loss of wildlife

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Airport Security often restricts the entrance of foreign wildlife and vegetation into the United States. These restrictions exist due to fear that the new invasive species will have a negative effect. Which of the following are possible negative effects of an invasive species?

• Carrier of disease

• Competition for native species

• Negative change of ecosystem

• All of the above

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Human impacts can have negative effects such as deforestation and desertification. The major reason these are dangerous is because:

• They cause extinction of invasive species

• They always lead to overpopulation

• They reduce the natural diversity of native species

• They cause an overproduction of resources

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

True or False: Deforestation and urbanization often occur because of each other.

• True

• False

Tags

NGSS.MS-ESS3-4

True or False: As cities grow, less land is available for farming, flood control, and wildlife habitats.

• True

• False

Tags

NGSS.MS-ESS3-4

True or False: Urbanization would include large areas of land cleared for development of homes, schools, factories, office buildings, other businesses and infrastructure.

• True

• False

Tags

NGSS.MS-ESS3-4

True or False: Animals are not displaced when deforestation and urbanization occurs.

• True

• False

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS2-5