Environmental Change

Changes in an ecosystem over a long period of time are shown in the diagram above. These changes will most likely lead to a ____. (TEK 7.10C)

• stable ecosystem that can last for many years

• loss of heterotrophs that cannot be recovered

• long-term rise in environmental temperatures

• forest consisting of only producers and decomposers

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

After a fire destroys a forest, the area will most likely

• remain bare land indefinitely

• develop into a desert area

• develop into an entirely different type of forest after hundreds of years

• recover through gradual changes back to a point of long-term stability

Tags

NGSS.MS-LS2-3

Changes in an ecosystem over a long period of time are shown in the diagram above. These changes will most likely lead to a

• stable ecosystem that can last for many years

• loss of heterotrophs that cannot be recovered

• long-term rise in environmental temperatures

• forest consisting of only producers and decomposers

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

The diagram above represents the various stages of ecological succession. If the ecosystem is not altered, which stage would be the most stable?

• grass

• pine forest

• shrub

• hardwood forest

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

As ecological succession progresses, a pioneer community gradually changes into a climax community. What typically happens during this process? (TEK 7.10C)

• The number of species increases

• The number of species decreases

• The organisms in the area decreases in size.

• The organisms in the area can no longer find food.

Tags

NGSS.MS-LS2-4

Use the diagrams shown above to correctly sequence the process of ecological succession happening in an ecosystem. ( TEK 7.10C)

• Z, W, X, Y

• Y, X, W, Z

• X, Y, W, Z

• W, Z, Y, X

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Environments can change gradually over time, such as when a pond fills in and a swamp grows in its place. This process is called

• pollution

• ecological succession

• adaptation

• symbiosis

Global warming means that

• Every year Earth is getting warmer

• the average annual temperature of Earth's atmosphere is gradually rising.

• Earth is producing more heat than it used to produce.

• The equatorial region of Earth is heating faster than the polar regions.

Tags

NGSS.MS-ESS2-6

NGSS.MS-ESS3-5

A record of Earth's long-ago weather can be found by digging into the

• polar ice cap in Antarctica

• lava from volcanoes

• sand bars in tropical waters

• melting permafrost in Alaska, Canada, and Siberia

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

Carbon Dioxide is

• a toxic gas produced by landfills

• produced by plants during photosynthesis

• needed by industry to power generators

• a greenhouse gas that traps heat in the atmosphere

Tags

NGSS.MS-LS2-3