Ecosystems and Communities

A __________ includes all living and non-living things in an environment. 

• population
• niche
• abitotic
• ecosystem

Tags

CCSS.RI.5.5

CCSS.RI.6.5

CCSS.RI.7.5

CCSS.RI.8.5

CCSS.RI.9-10.5

Examples of how humans negatively affect local ecosystems are

• Building dams, deforestation (cutting down trees), adding point sources to nearby streams to allow for run-off, building roads and structures, and salting roads.
• Creating laws to prohibit fishing from local streams.
• Planting trees and other plants to attract native species.
• Removing non-native species from the environment.

Tags

NGSS.MS-LS2-4

NGSS.MS-ESS3-4

Something that limits the size of a population.

• dependent variable

• control factor

• the x factor

• limiting factor

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

Deserts, mountains, and rivers are all examples of ________.

• biotic factors

• tundra

• ecosystems

• wetlands

Tags

NGSS.MS-ESS2-2

A large region characterized by a specific type of climate and certain types of plant and animal communities---

• population
• community
• biome
• ecosystem

Tags

NGSS.MS-LS2-3

Several species of warblers can live in the same spruce tree ONLY because they

• have different habitats within the tree.

• eat different foods within the tree.

• occupy different niches within the tree.

• can find different temperatures within the tree.

The symbiotic relationship between a flower and the insect that feeds on its nectar is an example of

• mutualism because the flower provides the insect with food and the insect pollinates the flower.

• parasitism because the insect lives off the nectar from the flower.

• commensalism because the insect doesn't harm the flower, and the flower doesn't benefit from the relationship.

• predation because the insect feeds on the flower.

Tags

NGSS.MS-LS2-2

What is one difference between primary and secondary succession?

• Primary succession is slow, and secondary succession is rapid.

• Secondary succession begins on soil, and primary succession begins on newly exposed surfaces.

• Primary succession modifies the environment, and secondary succession does not.

• Secondary succession begins with lichens, and primary succession begins with trees.

Which factor can influence continual change in an ecosystem?

• further disturbances

• long-term climate changes

• introduction of nonnative species

• all of the above

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

An example of a place with a microclimate is

• a mountain range capped with ice.

• a forested park in a desert city.

• an orchid growing in a rain forest.

• coniferous trees in a temperate forest.