Earth Systems and Nutrient Cycles

Which of Earth's spheres consists of the layers of gases surrounding our planet?

• atmosphere

• biosphere

• geosphere

• hydrosphere

Tags

NGSS.HS-ESS2-6

What function does carbon dioxide play in Earth's atmosphere?

• provides needed gases for humans to breathe

• provides protection from the suns harmful rays

• keeps the Earth warm through the greenhouse effect

• provides animals with needed nutrients

Tags

NGSS.HS-ESS2-6

Water which returns from the atmosphere to the Earth's surface as rain or snow is called

• precipitation

• evaporation

• transpiration

• condensation

Tags

NGSS.HS-ESS2-5

Nutrients circulate endlessly throughout the environment in complex cycles called

• eutrophication cycles

• respiration cycles

• photosynthetic cycles

• biogeochemical cycles

Tags

NGSS.MS-LS2-3

What is the term for organisms, including plants and algae, that create there own food?

• producers

• consumers

• legumes

• decomposers

Tags

NGSS.MS-LS2-3

Which of the following are common sources of phosphorus?

• gases in the atmosphere

• fertilizer and detergents

• snow and rain

• volcanoes and geysers

Tags

NGSS.MS-LS2-3

NGSS.MS-ESS3-4

During the process of nitrogen fixation, nitrogen gas is converted to

• water

• phosphorus

• ammonia

• carbon dioxide

What type of plant is associated with nitrogen-fixing bacteria?

• grains, like wheat and oats

• large evergreen trees

• legumes, like soybeans

• aquatic plants, like algae

An organism that must get nutrients by eating other organisms is called a

• producers

• consumers

• decomposers

• nitrifying bacteria

The gases that make up Earth’s atmosphere are commonly referred to as air. What are the two most abundant gases in the atmosphere?

• nitrogen and carbon dioxide

• nitrogen and oxygen

• water vapor and argon

• oxygen and carbon dioxide