Environmental Science Flashcard

Front

What fraction of Earth's land is considered 'dry land'?

Back

Total: 45% of Earth's land is classified as 'dry land', which loses more water through evaporation than it gains by precipitation.

Front

Approximately what percent of the Earth's land was covered in ice during the last glacial period?

Back

30% of the Earth's land was covered in ice during the last glacial period.

Front

What is ozone made of?

Back

Ozone is made of three oxygen molecules (O3).

Front

Do polar climates receive direct sunlight?

Back

True, polar climates do not receive direct sunlight.

Front

What are organisms that get their energy from eating other organisms called?

Back

Consumers are organisms that get their energy from eating other organisms.

Front

What is the definition of a desert?

Back

A desert is a dry area that receives very little precipitation, typically less than 10 inches (25 cm) per year.

Front

What is the water cycle?

Back

The water cycle is the continuous movement of water on, above, and below the surface of the Earth, including processes like evaporation, condensation, and precipitation.

Front

What is a producer in an ecosystem?

Back

A producer is an organism that can make its own food, typically through photosynthesis, such as plants.

Front

What is the role of consumers in an ecosystem?

Back

Consumers play the role of obtaining energy by eating producers or other consumers.

Front

What is the significance of the ozone layer?

Back

The ozone layer protects the Earth from harmful ultraviolet (UV) radiation from the sun.