Dynamic Ecosystems

A symbiotic relationship that benefits both species is referred to as

• mutualism

• commensalism

• parasitism

• cooperation

The largest number of individuals of one species that an ecosystem can support over time is

• biotic potential

• carrying capacity

• limiting factors

• community

Which takes the longest?

• primary succession

• secondary succession

• making toast

• singing your ABCs

Primary succession takes longer than secondary succession because

• fires take longer to recover from

• there is no soil at the beginning of secondary succession

• there is no soil at the beginning of primary succession

• droughts and floods occur

If two animals need meat from the same prey, there is ________ for that food source

• cooperation

• competition

• condensation

• community

Tags

NGSS.MS-LS2-1

_______________ consists of all the organisms living in an area and the nonliving features of their environment

• population

• biosphere

• community

• ecosystem

Which is NOT part of Earth's biosphere?

• Atlantic Ocean

• Mountains

• Saturn

• Hawaii

In succession, which organisms arrive first?

• mature trees

• small animals

• lichens and mosses

• large predators

Which change in an ecosystem increases the carrying capacity for a particular species?

• fire

• disappearance of a competing species

• flood

• appearance of a competing species

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is the difference between a community and an ecosystem?

• An ecosystem includes living and nonliving things in an area and a community includes all the populations in an area

• An ecosystem includes living and nonliving things in an area and a community is all the members of one species in the area.

• An ecosystem includes the nonliving things in an area and a community includes the living things.

• An ecosystem includes the living things in an area and a community includes the nonliving things.