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10 questions
Global warming means that
every year Earth is getting warmer.
the average annual temperature of Earth's atmosphere is gradually rising.
Earth is producing more heat than it used to produce.
the equatorial region of Earth is heating faster than the polar regions.
A record of Earth's long-ago weather can be found by digging into the
polar ice cap in Antarctica.
lava from volcanoes.
sand bars in tropical waters.
melting permafrost in Alaska, Canada, and Siberia.
Carbon dioxide is
a toxic gas produced by landfills.
produced by plants during photosynthesis.
needed by industry to power generators.
a greenhouse gas that traps heat in the atmosphere.
Which of these is not a human activity that impacts the environment?
transportation
construction
photosynthesis
manufacturing
True or False: Growing crops raises the carbon levels and causes global warming.
true
false
In a symbiotic relationship,
a parasite eats its host.
there are too many carbon emissions in the atmosphere.
the environment is rapidly thrown out of balance.
two organisms depend on each other for survival.
Environments can change gradually over time, such as when a pond fills in and a swamp grows in its place. This process is called
pollution.
ecological succession.
adaptation.
symbiosis.
Dangerous substances in an ecosystem that are harmful to its organisms are
sediments.
scavengers.
pollutants.
overpopulation.
How does the ozone layer protect life on Earth?
It shields bacteria in the soil against chemicals.
It absorbs water as part of the water cycle.
It neutralizes acid rain.
It blocks harmful radiation from the sun.
All of the following can interfere with the breakdown of organic waste material in the soil except:
minerals
solvents
plastics
pesticides
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