Abiotic and Biotic Factors Needed in an Ecosystem

Why would the population of a species decrease?

• Increase in predators

• Fatal disease

• Competition for shelter

• All the above

Tags

NGSS.MS-LS2-4

A Limiting Factor can decrease a population.

• True

• False

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

A Limiting Factor for a population of organisms is

• Space and Shelter

• Organisms are not affected by Limiting Factors

• Both A and B

• Neither A or B

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

Organisms that consume and break down a variety of small dead animals and rotting plants are

• carnivores

• consumers

• decomposers

• predators

Producers, also known as autotrophs, make their own food. They make up what level of every food chain.

• Level 1

• Level 2

• Level 3

• Level 4

Tags

NGSS.MS-LS2-3

Factors that limit population growth in an ecosystem include

• Food and Water

• Climate and Weather

• Space and Shelter

• All of the above

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

Consumers that eat only animals are known as

• Herbivores

• Carnivores

• Decomposers

• Algae

Herbivores are consumers that eat

• other herbivores

• plants and other photosynthetic organisms

• Carnivores

• Algae

Decomposers break down biotic wastes and dead organisms, returning the raw materials to the ecosystem.

• True

• False

Tags

NGSS.MS-LS2-3

Which is an example of a decomposer?

• Mushrooms

• Bacteria

• Mold

• All of the above

Tags

NGSS.MS-LS2-3