Populations and Communities

When the population density of an ecosystem gets too high,

• organisms don't have enough food

• there is not enough space for all the inhabitants living there

• the water available becomes a limited resource

• all of the above

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is the carrying capacity of an ecosystem?

• the lowest number of organisms an ecosystem can support

• the minimum number of organism an ecosystem can support

• the maximum number of organisms an ecosystem can support

• the heaviest load an organism can carry

Tags

NGSS.MS-LS2-4

The closer a population of an ecosystem get to its carrying capacity,

• the less competition there is for resources

• the more competition there is for resources

• it does not effect the ecosystem at all

• everything dies out

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

In a competition relationship

• both organisms die

• both organisms are competing for the same resources

• one organism benefits and the other is unaffected

• one organism benefits and the other is harmed

Limiting factors are things in an environment that

• help a population thrive and grow

• cause a population to stop growing

• could cause a population to die off over time

• provide extra resources to organisms

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

In a predator/prey relationship

• both organisms die

• both organisms are competing for the same resources

• one organism benefits and the other is unaffected

• one organism eats the other for food

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

When two organisms share a niche, they

• compete for the same resources

• never come in contact with each other

• immediately die

• increase each others ability to survive

A population will be limited in growing

• when the birth rate is greater than the death rate

• when there are more species competing for food

• when the resources are all abundant

• when the sun shines every day

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Population density can have a negative effect on an ecosystem

• when there are only a few organisms living there

• when there a variety of organisms in the ecosystem

• when the number of organisms living there is near the carrying capacity

• when the birds migrate south for the winter months

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

When a population reaches its carrying capacity,

• more organisms can live successfully

• less resources are available and competition increases

• more food is available but less space is there for homes

• no changes occur

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4