WorksheetsHuman Impact Review
Total questions: 15
Worksheet time: 15mins
Which negative human environmental influence is matched to the positive influence that has helped correct it?
Overhunting -- pollution controls
Disposal problems -- species preservation
Importation of organisms -- energy conservation
pesticide use -- biological control of insects
One advantage of biodiversity in an ecosystem is that it...
guarantees that the largest organisms will dominate the area
ensures a large amount of identical genetic material
develops relationships between organisms that are always positive over long periods of time
increases the chance that some organisms will survive a major change in the environment
Scientists claim that increased demand for almonds would have a negative environmental impact on California. Which observation, if any, would support this claim?
The almonds are exported to other states and countries and profits increase for California's almond industry.
The increased demand for almonds increases the freshwater consumption in California.
The additional CO₂ produced by the almond trees is released into the atmosphere.
The additional consumption of sunlight by the almond trees reduces the amount of energy input on the solar panels and therefore the amount of energy available to Californians.
Which human activity is correctly paired with its likely future consequence?
Overfishing in the Atlantic -- increase in supply of flounder and salmon as food for people
development of electric cars or hybrid vehicles -- increased rate of global warming
use of fossil fuels -- depletion of underground coal, oil, and natural gas supplies
genetically engineering animals -- less food available to feed the world's population
What is the best explanation for the rise in atmospheric CO2 levels since the 1800's?
natural fluctuations of the climate
eruptions of large volcanoes
increased use of fossil fuels by humans
photosynthesis by algae
Several factors can lead to soil erosion. Which of these human activities is most likely to contribute to soil erosion?
Clearing land for farming
Planting trees and vegetation
Preserving land as a wildlife habitat
Reducing the amount of livestock in an area
Air pollution is caused by many different activities. Air pollution can affect human health and the health of other living things. Which of these choices gives the best description of air pollution?
The circulation of pollutants in enclosed spaces
The long-term health issues related to the quality of the air
The contamination of the atmosphere by pollutants from human and natural sources
The pollution that results from global warming
How can ground pollutants affect the local fresh water supply?
The chemicals evaporate underground and come back in the rain water, filling lakes and rivers with toxic chemicals.
Erosion of soil causes those chemicals to leak into the ground water supply and end up in lakes and rivers
The chemicals absorb down their concentration gradient and eventually move to lakes and rivers
When plants are harvested the soil and excess plant parts are dumped into the water supply
Which of the following would be most effective method to slow down destruction of certain species of birds and small mammals from over hunting?
increase the demand for meat and pelts from these animals
Prevent nature documentaries from being made about these animals
Decrease the size of their habitat.
Regulate the number of animals that can be hunted in a certain area at certain times
