Organisms that break down dead plants and animals; they are the "recyclers" of an ecosystem

A factor that controls the size of a population - for example, availability of water or sunlight

This population of which the following organisms would most likely decline if small animals like rats, rabbits and snakes were eliminated from an ecosystem.
a. earthworms
b. grasses
c. hawks
d. mushrooms

Disease is this type of limiting factor

Herbivores in a food chain are what level consumer

A working unit made up of organisms interacting with both living and non-living factors

Organisms that create their own food through sunlight

Which of the following organisms produce energy from sunlight
a. worm
b. rabbit
c. hawk
d. grass

Energy moves through and ecosystem in the form of
a. water
b. oxygen
c. sunlight
d. food

What is the limit placed on an ecosystem that indicates the maximum number of organisms an area can support

non-living parts of an ecosystem

Organisms that obtain their food by eating

Most of the bacteria in a forest ecosystem are best classified as which of the following types of organisms?
a. consumers
b. decomposers
c. predators
d. producers

Light, water, temperature and food are all examples of:
a. abiotic factors
b. biotic factors
c. habitats
d. limiting factors

Which of the following biotic factor makes energy from sunlight:
a. worm
b. rabbit
c. hawk
d. tree

living parts of an ecosystem

The study of living, non-living and human-made parts of an ecosystem

A forest fire causes a good portion of a forest to burn - regrowth occurs over the next ten years. This is called________.

Algae are producers who make their won energy through:
a. soil
b. photosynthesis
c. decomposition
d. eating plankton in the ocean

Type of Growth Curve that most populations follow

A location where salt water meets fresh water

Areas of the planet that have similar characteristics, such as climate, amount of rainfall and plant species

Helps primary succession begin

All are biotic factors except:
a. pine trees
b. raccoons
c. sunlight
d mockingbirds

Relationship in which one organism consumes another organism