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WorksheetsEcosystem Stability
Total questions: 15
Worksheet time: 8mins
What is the cause of too much deforestation?
Increase Co2 in the atmosphere
Too much Nitrogen in the soil
Decrease in Co2 in the atmosphere
Increase in fish in the ocean.
An increase of Co2 causes....
Decrease in Co2 in the atmosphere
High levels of Salt in the ocean
Greenhouse effect, global climate change,loss of biodiversity
Primary ecological succession
Burning of fossil fuels can increase...
Nitrogen in the soil.
The number of trees in a forest.
Co2 in the atmosphere and cause Global warming.
The amount of oxygen in the air.
Too much nitrogen in the soil can cause..
High oxygen concentration in the atmosphere
Ocean sinks
Algae blooms; decreasing oxygen in the water
Carbon soil
What can cause overhunting of animals?
Decrease in Biodiversity
Increase in Biodiversity
Increase in tree diversity
Biodiversity stays the same.
Coral bleaching is caused by
Carbon pollution; increased ocean temperatures
Decrease in ocean temperatures
High levels of salt in the ocean
Too little carbon in the ocean
An invasive species is
Any kind of living organism that is not native to an ecosystem and causes harm.
It is a native species to the local area.
It is primary succession; where life starts from bare rock
It is a climax community; a mature forest
What is Eutrophication?
It is low nutrient rich waters which causes dense growth of plants.
It is excessive richness of nutrients in a lake or other body of water; cause of death of animal life due to lack of oxygen
It is an animal consuming another animal in the food web.
It is bacteria in the soil fixing nitrogen allowing animals to intake nitrogen.
What is Deforestation?
The intentional clearing of forested land or related ecosystem.
The growth of plants in a forest causing increased oxygen in the air.
The growth of shrubs and conifers towards a climax community.
The increase in food in the food web due to an increase in biodiversity.
What is a wetland?
It is an ocean; which has water all year round.
Areas where water covers the soil or is present at or near the surface of the soil
Areas where there is grass and shrubs and young coniferous trees.
It is a mature forest; or a mature ecosystem with a stable food web.
What is the greenhouse effect?
It is caused by global warming which increases Earth temperatures.
It is caused by increased fish in the ocean.
Increased bacteria in the soil causes and increase in tree diveristy.
It is the cutting down of trees to build houses and make land.
What is biomagnification?
An effect in which the concentration of pollutants increase dramatically in a food chain.
The decrease of pollution in the ecosystem and in the food web.
It is global warming ; causing increase in ocean and Earth temperatures.
It is the beginning of primary succession in ecological succession.
The creation of Dams cause...
a loss of species; increase water-borne diseases; displace communities.
Increase in water quality thus it improves the ecosystem.
It causes deforestation; causing global warming.
It is the cause of bacteria increase in the soil.
The introduction of new species in an ecosystem can cause..
the spreading of disease; and can decimate native species in the area.
It can only increase the oxygen in the atmosphere.
It decrease the amount of land in an ecosystem.
It is another way to clear the land; deforestation.
What can absorb Carbon Dioxide from the atmosphere?
Wetlands ;photosynthesis; ocean phytoplankton
Burning of fossil fuels; increase deforestation
Increased Co2 in the atmosphere by breathing more.
Denitrifying bacteria in the soil.
