Land
Watershed
Ocean Systems
Conservation
Throwback
100

The removal of large areas of forests for human purposes.

What is deforestation?

100

An area of land that drains runoff into a particular stream, lake, or ocean

What is watershed?

100

Include what are more oceans and other interconnected bodies of water, and they’re interactions with the rest of the hydrosphere, the atmosphere, the geosphere, and the biosphere.

What are ocean systems?

100

By minimizing the use of certain resources and supplies, like paper, water, and light, this principle of conservation is used

What is reduce?

100

The largest unit of geologic time

What is an eon?

200

The development of desert like conditions due to human activities and natural processes

What is desertification?

200

Water that has less than 0.2% salt content dissolved in it.

What is freshwater?

200

About 70% of the Earth’s oxygen comes from this source.

What is the ocean?

200

The cause of global warming

What is excess Carbon Dioxide levels?

200

The numerical age, in years, of a rock or object.

What is relative-age dating?

300

The the development of land for houses and other buildings near a city.

What is urbanization?

300

Water that is stored in cracks and pores beneath the Earth’s surface.

What is groundwater?

300

Areas of an ocean or large lake, where there is not enough oxygen to support marine life

What are dead zones?

300

The contamination of the environment with substances that are harmful to life.

What is pollution?

300

A location where two plates slide past each other

What is a transform plate boundary?

400

Planting trees to replace trees that have been cut or burned down

What is reforestation?

400

The system containing all the solid and liquid water on Earth.

What is the hydrosphere?

400

The process of removing dissolved oxygen from a liquid.

Deoxygenation

400

Animals at risk of going extinct

What are endangered animals?

400

Matching rocks and fossils from separate locations.

What is correlation?

500

The process of restoring land, disturbed by mining.

What is reclamation?

500

An area of permeable sediment or rocks that hold a significant amount of water.

What is an aquifer?

500

The loss of color in corals expel the colorful algae that live in them

What is coral bleaching?

500

By using an object again or changing the use of an object as a way to decrease the amount of trash, this principle of conservation is in use

What is reuse?

500

The era in which dinosaurs existed

What is the Mesozoic Era?

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