Symbiosis
Food Pyramids
Food Web
Limiting Factors
Bonus
100
The relationship between two different organisms over a long period of time.
What is symbiosis?
100
How a food pyramid illustrates the amount of energy used in an ecosystem.
What is the energy decreases as you move up?
100
How a food web or chain illustrates energy in an ecosystem.
What is the flow of energy by arrows?
100
Shelter, nutrients, space, sunlight, and water
What are limiting factors of a natural ecosystem?
100
The type of relationships shown in the food web.
What are feeding relationships?
200
Relationship where one organism benefits and the other does not care.
What is commensalism?
200
The name of organisms that belong in the 2nd trophic level. (not a specific name)
What are the primary consumers?
200
The grasshopper to the owl in the food web below.
What is an energy source or prey?
200
Any organism in a food pyramid that benefits from shelter.
What is a consumer?
200
The effect on organisms, if their habitat decreases.
What is a decrease in their numbers/population?
300
The type of symbiosis.
What is mutualism?
300
If the fish eats autotrophs, then what is the seal to the fish. 
What is a secondary consumer?
300
The missing part of the food web besides the energy source for the producers.
What are the decomposers?
300
The effect to the population of prey animals when predators increase?
What is decrease in number?
300
According to the graph below, the reason why the rabbit population is so high COMPARED to the predator.
What is that there are fewer predators?
400
When two similar trees compete for the same resources.
What is not symbiosis?
400
The organisms that complete the cycle of energy/food in a natural ecosystem.
What are decomposers?
400
Another name that describes a consumer and the "food" it eats. (hint: a synonym for "food" will be in the answer)
What is a heterotroph?
400
The limiting factor that is needed when there are too many trees competing for resources.
What is space?
400
Through what other organism does the fox get its energy from the grasses and the bird.
What is through the grasshopper?
500
The human mouth, is this, in the relationship with the bacteria S. mutans.
What is the host?
500
The process that happens when moving from a lower trophic level to a higher trophic level.
What is the removing of heat energy?
500
What part would be replaced if you put an ant in this food chain?
What is the decomposer/fungi?
500
A synonym for what carbon dioxide is in an ecosystem. (a category of a limiting factor)
What is abiotic?
500
The animal that gets the least amount of energy in the food web.
What is the lion or kite? (because they are tertiary consumers)