Photosynthesis
Water Cycle
Oxygen Cycle
Nitrogen Cycle
Odds and Ends
100
These are the only organisms that can make their own food.
What is plants or producers.
100
Another word for rain, sleet, or snow is ____.
What is precipitation.
100
Plants give off this gas.
What is oxygen.
100
This gas makes up most of the Earth's atmosphere.
What is nitrogen.
100
These are the only organisms that can make their own food.
What is plants or producers.
200
During photosynthesis plants make this type of food.
What is sugar.
200
The process by which water is changed into a gas is ____.
What is evaporation.
200
Animals breathe out this gas.
What is carbon dioxide.
200
These organsims must have nitrogen to grow.
What is plants.
200
This is when two or more organisms have a relationship in nature.
What is symbiosis.
300
Plants use water, sunlight, and this gas to make food during photosynthesis.
What is carbon dioxide.
300
The process by which water vapor is turned back into a liquid is _____.
What is condensation.
300
Approximately 20% of the air we breathe is this gas.
What is oxygen.
300
This group of organsims break down dead and decaying plants and animals and help return nitrogen to the soil.
What is decomposers.
300
This is a symbiotic relationship in which both of the organisms benefit.
What is mutualism.
400
This green chemical enables plants to make their own food.
What is chlorophyll.
400
These are formed when water vapor condenses on dust and other particles in the air.
What is clouds.
400
This is the most plentiful gas in the air we breathe.
What is nitrogen.
400
Farmers and gardeners may add this to the soil to increase the amount of nitrogen.
What is fertilizer.
400
This is a symbiotic relationship in which only one of the organisms benefits and the other is usually harmed.
What is parasitism.
500
Photosynthesis takes place in this part of the cell.
What is the chloroplasts.
500
This is the term for rain that falls and soaks into the ground.
What is groundwater.
500
This organ system exchanges oxygen and carbon dioxide between the body and the environment.
What is the respiratory system.
500
During a storm, this also helps to increase the amount of nitrogen returned to the soil.
What is lightning.
500
An orchid growing in a rainforest tree for support and to reach sunlight is an example of this type of symbiotic relationship.
What is commensalism.
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