Page 80 - Key to Social Studies 2
P. 80
Let’s Think Deeper!
What else pollutes the environment?
Ships sometimes put waste in rivers and pollute
the water we drink with gasoline or harmful
chemicals.
Humans leave garbage on the streets, which
produces a bad smell, attracts ies, and makes
people sick.
Checkpoint Tick the correct boxes.
Which environment is polluted?hich environment is polluted?
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