Have an account?
Skip to Content
Introducing new Paper mode
No student devices needed. Know more
10 questions
Show Answers
See Preview
- Multiple ChoicePlease save your changes before editing any questions.
What is the correct definition for nitrogen fixation?
Microbes reduce nitrate and nitrite into the gas form of nitrogen.
Atmospheric nitrogen is assimilated into organic compounds.
Transforms ammonia into nitrite.
- Multiple ChoicePlease save your changes before editing any questions.
What is the correct definition for denitrification?
Microbes reduce nitrate and nitrite into the gas form of nitrogen.
Atmospheric nitrogen is assimilated into organic compounds.
Transforms ammonia into nitrite.
- Fill in the BlankPlease save your changes before editing any questions.
_ is the process by which carbon is removed from the atmosphere.
- Multiple ChoicePlease save your changes before editing any questions.
What belongs at #3?
Evaporation
Condensation
Precipitation
- Multiple ChoicePlease save your changes before editing any questions.
Where does most of Earth's water exist?
Glaciers
Oceans
Lakes
In the ground
- Multiple ChoicePlease save your changes before editing any questions.
Eutrophication in lakes is frequently the direct result of:
industrial poisons like pesticides
an increase in predators
extra nutrients such as nitrogen and phosphorus
a diminished supply of nitrates
- Multiple ChoicePlease save your changes before editing any questions.
How do predators affect the population of their prey?
the populations of prey will decrease as a result of being eaten by a predator
the populations of prey will increase as a result of being eaten by a predator
There is no affect
- Multiple ChoicePlease save your changes before editing any questions.
Too much radiation from the sun can cause damage to the earth and an increasing in global temperature. The radiation is trapped by greenhouse gases. Select ALL the greenhouse gases from the following list:
Water Vapor
Carbon Dioxide
Oxygen
Nitrogen
Methane
- Multiple ChoicePlease save your changes before editing any questions.
The graph in the image shows the changes in a mosquito population due to humans. What caused the changes seen in the graph?
a reduction in resources
an increase in predation
decrease in shelter
disease due to spray
- Multiple ChoicePlease save your changes before editing any questions.
What is the correct definition for nitrification?
Microbes reduce nitrate and nitrite into the gas form of nitrogen.
Atmospheric nitrogen is assimilated into organic compounds.
Transforms ammonia into nitrite.