21.1 “Environmental Problems”
The Industrial Revolution began during the late ____.
As a result, harmful substances have entered the air,
water, and ______.
Pollution: an unwanted change in the environment
caused by substances, such as wastes or radiation.
Pollutants may harm plants, animals, and _________.
Many pollutants are human-made, but some are
produced by natural events, like volcanic eruptions.
Garbage
The average American produces 12 kg (____ pounds)
of garbage per week. Garbage goes into a ________.
Other landfills include _______________, which
include materials that can catch fire, explode,
corrode, “eat” through metal, or make people sick.
Chemicals
Chemicals, like ____________, pesticides, and
plastics are harmful as well. Chemicals may cause
_________ and destroy the _________layer.
High Power Waste
Nuclear power plants, which provide electricity,
produce ____________ waste.
Gases
Our atmosphere acts as a protective _________,
keeping the Earth warm enough for life to exist. The
amount of carbon dioxide in the atmosphere has
increased, trapping ______ around the earth. If
global temperatures continue to rise, the polar ice
caps may melt, flooding coastal areas.
Noise
Too much noise affects your ability to hear and
_________ clearly.
Resource Depletion
Renewable Resource: can be replaced at the same
rate at which it is ______. Examples, solar and wind
power.
Nonrenewable Resource: Cannot be replaced.
Examples, minerals and fossil fuels.
Exotic Species: An organism that makes a home for
itself outside its native home. These species often
thrive uncontrollably because they are away from
their natural predators.
Human Population Growth
Humans may eventually ________________.
Habitat Destruction
Humans pollute and destroy natural habitats when
they clear land for ______________, farming, mines,
or ____________.
Forest Habitat: _________________ is the
clearing of forest land.
Marine Habitat: _____ spills, chemicals, and
when plastics are dumped into marine habitats.
Effects on Humans
- Polluted air can cause ___________ problems.
- Polluted water causes sickness.
- Exposure to some chemicals may cause ______.
21.1 “Environmental Problems”
The Industrial Revolution began during the late ____.
As a result, harmful substances have entered the air,
water, and ______.
Pollution: an unwanted change in the environment
caused by substances, such as wastes or radiation.
Pollutants may harm plants, animals, and _________.
Many pollutants are human-made, but some are
produced by natural events, like volcanic eruptions.
Garbage
The average American produces 12 kg (____ pounds)
of garbage per week. Garbage goes into a ________.
Other landfills include _______________, which
include materials that can catch fire, explode,
corrode, “eat” through metal, or make people sick.
Chemicals
Chemicals, like ____________, pesticides, and
plastics are harmful as well. Chemicals may cause
_________ and destroy the _________layer.
High Power Waste
Nuclear power plants, which provide electricity,
produce ____________ waste.
Gases
Our atmosphere acts as a protective _________,
keeping the Earth warm enough for life to exist. The
amount of carbon dioxide in the atmosphere has
increased, trapping ______ around the earth. If
global temperatures continue to rise, the polar ice
caps may melt, flooding coastal areas.
Noise
Too much noise affects your ability to hear and
_________ clearly.
Resource Depletion
Renewable Resource: can be replaced at the same
rate at which it is ______. Examples, solar and wind
power.
Nonrenewable Resource: Cannot be replaced.
Examples, minerals and fossil fuels.
Exotic Species: An organism that makes a home for
itself outside its _________ home. These species
often thrive uncontrollably because they are away
from their natural predators.
Human Population Growth
Humans may eventually ________________.
Habitat Destruction
Humans pollute and destroy natural habitats when
they clear land for ______________, farming, mines,
or ____________.
Forest Habitat: _________________ is the
clearing of forest land.
Marine Habitat: _____ spills, chemicals, and
when plastics are dumped into marine habitats.
Effects on Humans
- Polluted air can cause ___________ problems.
- Polluted water causes sickness.
- Exposure to some chemicals may cause ______.