Cycling of matter Review- By Ms. Suzan Samir

The process in which water vapor is released into the air through from plants is called ___.

• Evaporation

• Transpiration

• Precipitation

• Condensation

The following are part of the carbon cycle EXCEPT _________.

• respiration
• precipitation
• decomposition
• photosynthesis

Decomposition releases __________ into the soil

• hydrogen
• oxygen
• nitrogen
• helium

Bacteria in soil change __________ into ingredients plants can use.

• H₂
• O₂
• N₂
• He₂

Which of the following is NOT a "cycle"?

• Water

• Energy

• Nitrogen

• Carbon

Plants absorb and store some of the energy in sunlight through a process called …

• Cellular respiration

• Photosynthesis

• Carbon Cycle

• Decomposer

Can organisms absorb nitrogen gas directly out of the atmosphere?

• Yes

• No

_______________________ converts nitrogen into a form that plants can absorb.

• Denitrifying bacteria

• Nitrogen fixing bacteria

• Decomposers

• Producers

How do animals obtain nitrogen stored in plants?

• Denitrifying bacteria

• Nitrogen fixing bacteria

• Directly from the atmosphere

• They eat the plants

Which term describes the phase change of a gas changing to a liquid?

• Precipitation

• Condensation

• Evaporation

• Freezing