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Evolution and Environment
What is one consequence of an increasing human population?
More waste will be produced.
Raw materials will be conserved.
Natural gas reserves will increase.
Where is toxic waste released from?
Only from factories
Only from farms
From factories, farms and households
How can rivers be polluted?
Only if waste is discharged into them
Only if toxic chemicals are washed off the land
Directly from waste discharged into them, and when toxic chemicals wash off the land
Why is the sulfur dioxide produced from burning fuels a problem?
It causes acid rain.
It causes alkaline rain.
It damages the ozone layer.
How do lichens indicate levels of air pollution?
Only bushy lichens can grow in very polluted air.
Lichens cannot grow at all in very polluted air.
Most lichens grow best in very polluted air.
Why is deforestation in tropical regions a problem?
More carbon dioxide is absorbed from the atmosphere.
Less carbon dioxide is 'locked up' in wood.
There is a dangerous increase in biodiversity.
Which of the following is not a greenhouse gas?
Which of the following produces large amounts of atmospheric methane?
The burning of fossil fuels
Rice paddy fields