Air Pollution
Water Pollution
Food Systems
Waste
Energy
100
Humans exhale this gas, which trees convert back into oxygen.
What is Carbon Dioxide?
100

When Particulate Matter from burning fossil fuels and other sources evaporates with water to form raindrops, this liquid results.

What is Acid Rain?

100
Humans eat vegetables and meat, so we are this kind of eater.
What are Omnivores?
100
A basic way to keep plastic, cardboard, paper, and metal packaging from becoming waste.
What is Recycling?
100
Energy that comes from the sun.
What is solar energy?
200
When unnaturally large numbers of cattle are raised for human consumption, this gas that they produce contributes to air pollution.
What is Methane?
200

This method of extracting natural gasses from the ground has been known to contaminate local water supplies, sometimes making them flammable.

What is Fracking?

200

Choosing to eat this type of food will decrease emissions from transporting food between countries.

What is eat local and seasonal food?

200
Four steps to decrease the amount of waste you produce.
What are rethink, reduce, reuse, and recycle?
200
Non-renewable energy sources, the burning of which produce both chemical energy and air pollution.
What are fossil fuels?
300
Carbon Dioxide (CO2) forms when there is plenty of oxygen available for the carbon to bond with. In enclosed spaces, like garages and apartments, there is less oxygen. As a result, the dangerous CO forms instead. What is the name of CO?
What is carbon monoxide?
300

97% of the world's water is this type of water.

What is Salt Water?

300
Choosing to do this decreases emissions and waste production connected to the industrial farming of livestock.
What is eating less meat?
300
What always comes along with our products and goes directly into waste and is often unnecessarily large and overabundant. 

What is packaging?

300
This wastes energy if plugged in, even if not connected to your phone.
What is a phone charger?
400
The layer of the atmosphere which we live and breathe in. The layer closest to Earth.
What is Troposphere?
400
The ocean in which currents have pulled litter together to form a giant mass like an island.
What is the Pacific Ocean?
400
These invertebrates help speed composting.
What are Worms?
400
Human bio-solids are sent here to be treated and turned into fertilizer.
What is a water treatment plant?
400
Splitting atoms to produce this kind of energy produces radioactive waste.
What is nuclear energy?
500
Abbreviated PM, it includes particles of dust and ash that come from factories, cars, construction, forest fires, and volcanoes. It contributes to acid rain.
What is Particulate Matter?
500
The composition of a water molecule.
What is one oxygen and two hydrogen atoms?
500
These chemicals are sprayed on plants to keep bugs from eating them, but they are poisonous and can make humans sick.
What are Pesticides?
500
The process by which food waste and organic matter break down.
What is decomposition?
500
Plants get their energy from the sun, through this process.
What is photosynthesis?
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