Which one of the following is a fossil fuel?
The most reliable source of energy for all life on Earth is __________.
Wind and rain can cause __________, the movement of soil from one place to another.
Which is the easiest type of plastic to recycle?
Which one of the following human activities would be most likely to increase soil erosion?
|B)||cutting down a forest|
Earth would be too cold to support life as we know it without
|B)||the greenhouse effect|
|C)||the ozone layer|
Which one of the following is an example of solid waste?
Used paper, grass clippings, and vegetable scraps can be turned into soil-enriching __________.
What type of energy is released from uranium, a radioactive element?
|B)||fossil fuel energy|
The 3 Rs of conservation are
|A)||reduce, reduce, and reduce again|
|B)||reduce, reuse, and recycle|
|C)||restore rural regions|
|D)||resources, rain, and renewable|
__________ is electricity produced when the energy of falling water turns the blades of a generator turbine.
When algae from an algal bloom die, they are broken down by bacteria that use up much of the __________in the water.
Rain can cause water pollution when it washes __________.
|A)||all answers are correct|
|B)||pesticides and fertilizers into streams|
|C)||air pollutants out of the sky|
|D)||oil and grease off of roads and parking lots|
Satellites that orbit Earth use __________ to generate electricity.
Not only does it save resources to recycle metals and glass, it also takes far less __________ to make containers and other products from recycled minerals.
Water that collects between particles of soil and rocks is called __________.
Any substance that contaminates the environment is __________.
|A)||a greenhouse gas|
To reduce your fossil fuel use you can take public transportation instead of __________.
|B)||riding a bike|
|D)||driving alone in a car|
Which one of the following is a renewable resource?
Which one of the following is an example of indoor air pollution?