Water Cycle
Nitrogen Cycle
Carbon Cycle
Mystery 1
Mystery 2
100
This is the evaporation of water from the leaves of plants.
What is transpiration?
100
The chemical formula for atmospheric nitrogen (unusable).
What is N2?
100
Producers (plants) obtain carbon dioxide from _________ during photosynthesis.
What is the atmosphere?
100
Water that seeps into the ground, where it is stored in porous rocks.
What is groundwater?
100
Name the cycle in the picture.
What is carbon cycle?
200
Water enters the atmosphere as this.
What is water vapor?
200
Nitrogen gas makes up this percentage of Earth's atmosphere.
What is 78 percent?
200
The gas produced during respiration.
What is carbon dioxide?
200
Farmers add this to their fields in order to produce more fixed nitrogen (ammonium) in the soil.
What is fertilizer?
200
#5
What is precipitation?
300
The process by which water changes from liquid form to an atmospheric gas.
What is evaporation?
300
Only certain types of ______ can use nitrogen gas directly.
What is bacteria?
300
The process in which fossil fuels are burned.
What is combustion?
300
Precipitation that falls on land and flows (due to gravity and slope) into streams, rivers, and lakes.
What is run-off?
300
How the rabbit get the nitrogen it needs.
What is eating the plants?
400
Water vapor becomes tiny droplets that form clouds.
What is condensation?
400
The conversion of nitrogen gas (N2) into ammonia (usuable nitrogen) is this process.
What is nitrogen fixation?
400
The process where the composition of organic matter is broken down into simpler parts.
What is decomposition?
400
Most animals get their nitrogen by ________.
What is eating other organisms?
400
A represents this process.
What is photosynthesis?
500
When water droplets that form clouds are large enough, the water returns to Earth's surface in this form.
What is precipitation?
500
Soil bacteria or lightning convert nitrates (unusuable) into nitrogen gas (usable) in this process.
What is nitrogen fixation?
500
The key to the carbon cycle.
What is photosynthesis?
500
Overly enriched with nutrients from fertilizer can cause __________.
What is eutrophication?
500
Turning nitrogen into the unusuable form.
What is denitrification?