Applied Bio - Cycles of Matter

When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.

• Water
• Atmosphere
• Sun
• Air

Which one of these does not add CO2 to the atmosphere?

• cooking with gas
• planting trees
• burning wood
• riding in a bus

What converts nitrogen gas into a usable form for plants and animals?

• bacteria

• rain

• fungi

• car exhaust

The process in which nitrogen circulates and is recycled is called

• The nitrogen cycle

• The carbon cycle

• The water cycle

• The phosphorus cycle

How do animals get the nitrogen they need?

• From the air they breathe

• From the water they drink

• From the food they eat

• From the sun

Identify the cycle pictured.

• The Water cycle
• The Carbon cycle
• The Nitrogen cycle
• The Phosphorus cycle

Snow, sleet, hail, and rain are all examples of  ________________. 

• evaporation
• condensation
• accumulation
• precipitation

What is another name for evaporation of water through the leaves of plants?

• Transpiration
• Condensation
• Precipitation
• Percolation

Which of the following best explains why nitrogen fixation must take place?

• Atmospheric nitrogen is unusable to plants and animals
• Nitrogen must be returned to the atmosphere
• Animals must breathe in nitrogen
• Nitrogen gets "stuck" in the soil and must be untrapped

What is A?

• Evaporation
• Condensation
• Precipitation
• Runoff