Symbiosis
Food Pyramids
Food Web
Limiting Factors
100

The type of symbiotic relationship is called

mutualism

100

How does a food pyramid illustrate the amount of energy used in an ecosystem.

The energy decreases as you move up and increases as you move down

100

Where does the grass obtain its energy?

the sun

100

What are limiting factors of a natural ecosystem?

 Shelter, nutrients, space, sunlight, and water

200

What is the relationship where one organism benefits and the other does not benefit but isn't harmed either.

commensalism

200

What are the name of organisms that belong in the 2nd trophic level. (What eats producers?)

 the primary consumers

200

Through what other organism does the bird get its energy, besides from the grass?

the grasshopper

200

What is the effect to the population of prey animals when predators increase?

prey decrease in number

300

The relationship between two different organisms over a long period of time is called

 symbiosis

300

If the fish eats producers, then the seal eats the fish. What level consumer is the seal? 

 secondary consumer

300

What is the missing part of the food web besides the energy source for the producers?

 decomposers

300

According to the graph below, the reason why the rabbit population is so high COMPARED to the predator. 

It is because there are fewer predators than prey.

400

When two similar trees compete for the same resources this is...

competition

400

What are the organisms that complete the cycle of energy/food in a natural ecosystem by breaking down dead matter.

 decomposers

400

How does a food web or chain illustrate energy in an ecosystem.

It shows the flow of energy by arrows

400

What is the limiting factor trees would be competing for when there are too many trees in an area.

space

500

The dog in the relationship between the dog and the flea is the 

host

500

What is an energy source or prey?

 

The grasshopper to the owl or bird

The rabbit to the fox

The mice to the owl

500

What is the effect on organisms if their habitat decreases?

a decrease in their numbers/population