Chemicals
Legislation
The Earth
Human Population
Potpourri
100

This gas is the major cause for climate change.

What is carbon dioxide?

100

This law protects human health by setting emission limits on six air pollutants.

What is the Clean Air Act?

100

97% of the water on Earth is this type of water.

What is marine water?

100

This is the current world population in billions of people:

What is 8?

100

This is the ultimate source of energy for all living and non-living things on the Earth:

What is the Sun?

200

This gas is the primary component of air.

What is nitrogen gas?
200

The Kyoto Protocol set standards for controlling this greenhouse gas:

What is carbon dioxide?

200

This is the age of the Earth, as determined by Clair Patterson's study of lead radioisotopes:

What is 4.5/4.6 billion years?

200

Individuals who move out of a population are said to have done this:

What is emigrate?

200
A group of individuals of the same species that are able to interbreed with each other are known as this:

What is a population?

300

This is the primary form of nitrogen usable by plants.

What are nitrates/nitrites?

300

This law sets guidelines and protocols for the water treatment process.

What is the Safe Drinking Water Act?

300

We live in this layer of the atmosphere, the closest to Earth's surface.

What is the troposphere?

300

Worldwide trends show that as a family's income increases, the number of children they have does this:

What is decreases?

300
The A Horizon of a soil column is more commonly known as this; where the most nutrients are available to plants.

What is topsoil?

400

This strong greenhouse gas is associated with livestock and landfills.

What is methane?

400

This law helps the EPA identify and clean up hazardous waste sites.

What is CERCLA?

400
The El Nino Southern Oscillation is associated with this change in water chemistry.

What is increased surface temperatures?

400

Studies indicate that this aspect of a female's life has a strong impact on the number of children she will bear in her lifetime:

What is education?

400

The majority of humans worldwide consume three major plants in their diet: rice, corn, and this plant.

What is wheat?

500

This group of chemicals are found in paints, furniture stains, upholstery, and carpeting. 

What are volatile organic compounds?

500

This UN agreement banned "The Dirty Dozen," most of which were endocrine disruptors, from international commerce. 

What is the Stockholm Convention?

500

This is the current geologic time period:

What is the quaternary?

500

These two major historical events are said to fueled the exponential growth in the human population in the past two centuries.

What is Germ Theory and Industrial Revolution

500

This agronomist is responsible for the "Green Revolution."

Who is Norman Borlaug?