Enviro Fall Semester Exam

Front

What percentage of our atmosphere is made of oxygen?

Back

21% of our atmosphere is made of oxygen.

Front

Which gas makes up 78 percent of our atmosphere but can be used by plants only when transformed by bacteria first?

Back

Nitrogen is the gas that makes up 78% of our atmosphere and is used by plants after being transformed by bacteria.

Front

What term is used to refer to the many feeding relationships that are possible in an ecosystem?

Back

The term is 'food web', which illustrates the interconnected feeding relationships in an ecosystem.

Front

The energy released by an earthquake occurs in the form of?

Back

The energy released by an earthquake occurs in the form of seismic waves.

Front

Ocean currents bring warm water from the equator towards Earth's?

Back

Ocean currents bring warm water from the equator towards the Poles.

Front

What is the primary greenhouse gas responsible for climate change?

Back

Carbon dioxide (CO2) is the primary greenhouse gas responsible for climate change.

Front

What is the process by which plants convert sunlight into chemical energy?

Back

Photosynthesis is the process by which plants convert sunlight into chemical energy.

Front

What is the term for the variety of life in a particular habitat or ecosystem?

Back

Biodiversity refers to the variety of life in a particular habitat or ecosystem.

Front

What is the main source of energy for Earth's climate system?

Back

The main source of energy for Earth's climate system is the Sun.

Front

What is the term for the gradual increase in Earth's average temperature due to human activities?

Back

Global warming refers to the gradual increase in Earth's average temperature due to human activities.