Human Impact
Carbon Cycle
Water Cycle
Nitrogen Cycle
100
How did the rice paddies agriculture affect the Tigers in Asia?
It took most of the water that was required for the tigers to survive.
100
What things emit carbon dioxide?
Planes, trains, grills and cars are all some things that emit carbon dioxide.
100
What is evaporation?
It is the process by which water is turned into gaseous steam. The water molecules are moving much faster, escape and become a gas.
100
What is nitrogen found in the atmosphere called?
It is called: atmospheric nitrogen.
200
What types of pollution are there? How does this impact the ecosystem?
There is air pollution and water pollution. It decreases the quality of the air and the water, resources necessary for survival.
200
How is carbon dioxide removed from the air?
Carbon dioxide is removed from the air by plants through photosynthesis.
200
What is condensation? Give an example from your kitchen?
Condensation is the process whereby steam becomes water. For example, in your kitchen if the steam coming out of the kettle is cooled down, it turns back into water. This is slowing down of the movement of the water molecules.
200
When there is decaying matter in the nitrogen cycle, which organisms decompose this material?
These things that decay matter in the nitrogen cycle are: worms and fungi.
300
Which things in our daily lives exhibit combustion?
Planes, trains and automobiles exhibit combustion.
300
If the air contained a lot of pollutants, what would happen to the quality of the water? How do you know this is true?
The quality of the water would definitely decrease because when precipitation forms, it takes the air particles with it. It then goes into the lakes, rivers and oceans.
300
What is meant by nitrogen fixing bacteria?
Nitrogen fixing bacteria, fix the atmospheric nitrogen into a usable nitrogen for example, nitrates.
400
What requirements does a lot of agriculture need? How does this impact an ecosystem? Provide at least two ways.
It requires a lot of land and it also requires a lot of water in the area.
400
Which organisms remove Carbon dioxide from the air? Through which process does this happen?
Plants remove Carbon dioxide from the air. It happens through photosynthesis as trees are also carbon sinks.
400
The water cycle is considered a closed system because nothing can enter or leave this system. What would happen though, if the water cycle were an open system?
If it were an open system, there is more chance for it to be contaminated by outside factors.
400
Can plants use atmospheric nitrogen?
No they cannot. They cannot use this form of nitrogen in their system, they can only use nitrates.
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