LE: Human Impacts

African elephant tusks consist of high-quality ivory. In recent years, the elephant population in certain African wildlife preserves has decreased. This decrease is most likely due to

• air pollution

• human exploitation

• biocide use

• importation of Japanese beetles

Which human activity would most likely deplete finite resources?

• use of natural enemies to eliminate insect pests

• development of wildlife refuges

• governmental restriction of industrial pollution

• uncontrolled population growth

Tags

NGSS.MS-ESS3-4

Which statement is a valid inference that can be made if the human population continues to grow at a rate similar to the rate shown between 1000 A.D. and 2000 A.D.?

• Future ecosystems will be stressed and many animal habitats may be destroyed.

• Global warming will decrease as a result of a lower demand for fossil fuels.

• One hundred years after all resources are used up, the human population will level off.

• All environmental problems can be solved without a reduction in the growth rate of the human population.

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

Fossil fuels have been used for years as a source of energy. Even though there are many negative issues associated with the use of fossil fuels, they continue to be used to a great extent. This is most likely because

• they have been commercially available as an energy source

• there are alternatives to these types of fuels

• they have had a positive effect on global temperatures

• fossil fuels can be burned to produce large quantities of carbon dioxide

Tags

NGSS.MS-ESS3-4

Which action will result in the greatest decrease in rain forest stability?

• removing one species of plant for medicine

• harvesting nuts from trees

• cutting down all the trees for lumber

• powering homes with wind energy

Tags

NGSS.MS-ESS3-4

NGSS.MS-ESS3-3

NGSS.MS-LS2-4

NGSS.MS-LS2-5

In some areas, foresters plant one tree for every tree they cut. This activity is an example of

• lack of management of nonrenewable resources

• a good conservation practice for renewable resources

• a good conservation practice for nonrenewable resources

• lack of concern for renewable natural resources

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-5

Humans are responsible for some of the negative changes that occur in nature because they

• have encouraged the development of wildlife refuges and parks

• have passed laws to preserve the environment

• are able to preserve scarce resources

• are able to modify habitats more than any other species

Tags

NGSS.MS-ESS3-4

NGSS.MS-ESS3-3

A change in the acidity of mountain lakes would most likely be a result of

• ecological succession of the area at the top of the mountain

• the introduction of new species into the lakes

• air pollution from smoke stacks miles away

• planting grasses and shrubs around the lakes

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3

Many beverage companies are required to recycle bottles and cans because this activity directly reduces

• air pollution and destruction of the ozone shield

• overpopulation and soil erosion

• solid waste and depletion of resources

• thermal pollution and extinction of wildlife

Tags

NGSS.MS-ESS3-3

Which graph best illustrates the change in the human population over the past 2000 years?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-ESS3-4