Show:
experiment
Organisms and Their Relationships
relationships in ecosystem
Energy in an ecosystem
Matter cycles
100
explanation for a question or a problem that can be formally tested
what is hypothesis?
100
A living thing that has the ability to act.
What is organism?
100
the act of one organism pursuing and consuming another organism for food.
What is predation？
100
Each step in a food chain or food web.
What is trophic level?
100
Water cycle, carbon and oxygen cycle, nitrogen cycle, phosphorus cycle...
Give four examples of matter cycles.
200
the group exposed to the factor being tested.
What is experiment group?
200
A group of tigers.
What is an example of the population?
200
the close relationship that exists when two or more species live together.
What is symbiosis？
200
Bacteria.
What is an example of detritivore?
200
the process of capture and conversion of nitrogen into a form that is useable by plants.
What is nitrogen fixation?
300
the group that is used for comparison in an experiment
What is control group?
300
Because ecosystem cotains both biotic and abiotic factors, but biological community just contains biotic factors.
Why ecosystem is larger than biological community?
300
a symbiotic relationship in which one organism benefits at the expense of another organism is parasitism.
What is parasitism?
300
Producer-Herbivore-Omnivore-Carnivore
What is the simple model of the food chain?
300
The process of remove nitrogen.
What is denitrification?
400
the fact that change in a controlled experiment.
What is independent variable?
400
Group of ecosystems with the same climax.
What does biome contains?
400
the relationship between two or more organisms that live together and benefit from each other is mutualism.
What is mutualism?
400
Because most of energy is consumed by cellular processes or released to the environment as heat.
Why only 10 percent of all energy is transferred to the level above it in an ecological pyramid?
400
Through living organisms(animals, plants).
There are two ways in the carbon and oxygen cycle, what is the faster way?
500
Lucy did a experiment of flowers and after she finished the experiment, her friend Elle checked the result of that experiment.
What is the example of peer review?
500
Organism-Population-Biological community-Ecosystem-Biome-Biosphere
What is the levels of organization?
500
a relationship in which one organism benefits and the other organism is neither helped nor harmed.
What is commensalism?
500
Food web is more complex than food chain, most of organisms feed on more than one species.
What is the difference between food chain and food web?
500
Calcium carbonate (CaCO3)
What is the material combined by oxygen and carbon with calcium?