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

• Transpiration
• Condensation
• Precipitation
• Percolation

Rain, sleet, snow, and hail are all forms of _____.

• Percolation
• Evaporation
• Condensation
• Precipitation

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 the overall purpose of photosynthesis?

• To use energy from the sun to produce food for the plant
• To use energy from the sun to produce oxygen for animals to breathe
• To break down food in order to produce energy (ATP)
• To break down food in order to produce carbon dioxide

What is A?

• Evaporation
• Condensation
• Precipitation
• Runoff

What is B?

• Evaporation
• Condensation
• Precipitation
• Runoff

The continuous process by which water moves from Earth's surface to the atmosphere and back

• Nitrogen Cycle
• Carbon Oxygen Cycle
• WaterCycle
• Nitrogen Fixation

What gas is released by plants from the process of photosynthesis?

• air
• carbon dioxide
• oxygen
• hydrogen

Photosynthesis

• absorbs CO2
• releases CO2

How animals get the nitrogen they need

• from the air they breathe
• from the water they drink
• from the food they eat
• from the Sun