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Ecological Contamination (Grade 10)

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Ecological Contamination

A change to the environment that has a negative effect on living things is called
  1. a renewable resource.
  2. a nonrenewable resource.
  3. population growth.
  4. pollution.
The warming of the Earth is a(n)                             effect. People are worried that it will have a(n)                             effect, perhaps causing the extinction of a number of species.
  1. ecological ... evolutionary
  2. abiotic ... dispersal
  3. evolutionary ... biotic
  4. ecological ... dispersal
Which major changes in human society and the environment occurred during the Industrial Revolution?
  1. People lived in small tribes, many mammals went extinct.
  2. Domesticated plants were altered, forest was replaced with farmland.
  3. Fossil fuel consumption, technological efficiency, and environmental pollution all increased.
  4. Common grazing areas were replaced with closed fields.
Which of the following reduced local smog but increased acid rain?
  1. tall smokestacks
  2. catalytic converters
  3. wind power
  4. scrubbers
The ecological footprint for a person in a particular country takes into account what requirements of supporting that individual?
  1. land used for crops
  2. land taken up by housing
  3. forested area that absorbs pollution
  4. all of the above
During a temperature inversion,
  1. sulfur oxides and nitrogen oxides combine with water in the atmosphere.
  2. an influx of acidic water causes a rapid change in the pH of water.
  3. levels of ground-level ozone decrease.
  4. pollutants are trapped near Earth's surface.
Polluted groundwater is difficult to clean up because
  1. groundwater is deep in the ground and dispersed through large areas of rock.
  2. pollutants cling to the materials that make up the aquifer and contaminate the clean water.
  3. the recycling process of groundwater can take hundreds or thousands of years.
  4. all of the above
The seas are still rising. Many researchers accept that the cause is
  1. glaciers getting bigger.
  2. lower temperatures on Earth's surface.
  3. ocean water getting more dense.
  4. global warming.
After nutrient enrichment from sewage contamination, a lake often becomes inhospitable to fish. Why?
  1. Nutrient input to a lake causes the explosive growth of algal and cyanobacterial populations. Decomposition of dead algae and cyanobacteria by bacteria results in the depletion of oxygen in the water, which leads to the death of fish.
  2. Nutrient input to a lake poisons the organisms that fish eat.
  3. Nutrient input to a lake poisons the fish.
  4. Nutrient input to a lake causes the explosive growth of algal and cyanobacterial populations. This reduces the penetration of light into the lake, the water temperature falls, and eventually the fish population dies.
Give an example of how humans damage ecosystems and consider the effects and conflicts that may arise.

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