Ecosystems
Biogeochemical Cycles
Ecological Succession
More Cycles
Do you feel lucky?
100
What kind of organism obtains energy only from producers?
What is herbivores
100
Nitrogen fixing-bacteria live in the nodules of the roots of plants called what?
What is legumes
100
What organism is the first to arrive in an area undergoing primary succession?
What is Lichen OR pioneer species
100
In the carbon cycle, what is the source of carbon for producers?
What is CO2 gas - in the atmosphere
100
What gas makes up 78% of our atmosphere, but can be used by plants only when transformed by bacteria first?
What is nitrogen
200
What is the ultimate source of energy for all organisms except those living deep in the ocean near a thermal vent?
What is sunlight
200
Free Points
What is You rock, dude.
200
What type of succession occurs on new islands formed by volcanic activity?
What is primary succession
200
What is the most common carbon sink?
What is limestone
200
What process uses energy from the sun to make sugar molecules?
What is photosynthesis
300
How much energy transfers from one trophic level to the next?
What is 10%
300
Succession that occurs on abandoned farmland is called what?
What is Old field Succession
300
What type of succession takes place after a fire or a flood?
What is secondary succession
300
Underground carbon sources composed of plants and animals that died millions of years ago are known as what?
What is fossil fuels
300
What is the difference between a food chain and a food web?
What is food chain shows how energy flows from producer to top consumer; food web shows feeding relationships in a community
400
Horses and cattle, who only eat producers, are known as what?
What is herbivores
400
Bacteria and fungi are examples of a group of consumers called what?
What is decomposers
400
During succession, a final and stable community is referred to as what?
What is a climax community
400
What is ecological succession?
What is the process of an ecosystem changing over time.
400
In deep ocean ecosystems, what would occupy the bottom trophic level of an energy pyramid?
What is bacteria
500
What term is used to refer to the many feeding relationships that are possible in an ecosystem?
What is food web
500
Excessive use of this on lawns and gardens can affect the nitrogen and phosphorus cycles in nearby lakes and streams.
What is fertilizers
500
True or False: A climax community never changes.
What is False
500
What are the two major ways that nitrogen can be fixed into nitrates?
What are nitrogen-fixing bacteria and lightning
500
Name three organisms that could make up the bottom level of a trophic pyramid.
What is plants, algae, bacteria (It's okay if you just name three different types of plants.)
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