Biology and Mathematics Quiz

What is the main focus of the Biology Unit: Ecology?

• The study of chemical reactions

• The study of living things and their ecosystems

• The study of mathematical equations

• The study of physical forces

What makes the planet Earth a very diverse planet?

• It has a uniform climate everywhere.

• It has diverse conditions and types of life.

• It has only one type of ecosystem.

• It is the only planet with water.

What is necessary for the Earth to sustain all the life that it does?

• Only one factor is needed.

• No factors are needed.

• Many factors interact.

• Only sunlight is needed.

What affects the sustainability of life on Earth?

• Only the presence of water.

• Many factors.

• Only the presence of air.

• Only the presence of sunlight.

Which sphere of Earth is composed of a layer of gases extending upward for hundreds of kilometers?

• Lithosphere

• Hydrosphere

• Atmosphere

• Biosphere

What percentage of the atmosphere is made up of nitrogen?

• 21%

• 78%

• 50%

• 1%

Which sphere of Earth consists of all the water on, above, and below Earth's surface?

• Lithosphere

• Atmosphere

• Hydrosphere

• Biosphere

What is the lithosphere primarily composed of?

• Water and ice

• Gases and air

• Rocks and minerals

• Plants and animals

What term do scientists use to describe the locations in which life can exist within the lithosphere, atmosphere, and hydrosphere?

• Ecosystem

• Biosphere

• Habitat

• Biome

How does the size of the biosphere compare to the size of Earth?

• The biosphere is larger than Earth

• The biosphere is the same size as Earth

• The biosphere is very thin in comparison to Earth

• The biosphere is much thicker than Earth