Elements that cycle between the living and nonliving parts of ecosystems:

• iron

• carbon

• oxygen

• copper

• nitrogen

Tags

NGSS.MS-LS2-3

Which process releases carbon into the soil?

• photosynthesis

• decomposition

• cellular respiration

• combustion

Tags

NGSS.MS-LS2-3

Which is not part of the water cycle?

• nitrogen fixation

• precipitation

• transpiration

• condensation

Tags

NGSS.MS-ESS2-4

What supplies more than 50% of atmospheric oxygen?

• trees

• coral reefs

• grasslands

• phytoplankton

Tags

NGSS.MS-LS1-6

Energy ​ (a)   and matter ​ (b)   in ecosystems.

• flows
• cycles
• stagnates
• evaporates
• disappears
• accumulates

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

According to the law of conservation of mass, which statement is true?

• mass is destroyed during a fire

• mass is created when plants and animals grow

• mass cannot be created or destroyed during chemical changes

• mass is created or destroyed during chemical changes

Tags

NGSS.MS-PS1-5

Living things are built out of __ compounds.

Tags

NGSS.MS-LS1-7

Where do plants get carbon?

• from the soil

• from the water

• from plant food

• from the atmosphere

Tags

NGSS.MS-LS1-6

Where do animals get carbon?

• from water

• from the atmosphere

• by eating plants and animals

• from the Sun

Tags

NGSS.MS-LS1-6

How does carbon leave living things?

• cellular respiration

• photosynthesis

• decomposition

• combustion

• nitrogen fixation

Tags

NGSS.MS-LS1-7

NGSS.MS-LS2-3