Holt Environmental Science

In arctic regions, the permanently frozen layer of soil or sub soil is called.

• tundra

• ice

• permafrost

• subsoil

A treeless plain that is located in the Arctic or Antarctic characterized by very low winter temperatures; short, cool summers; and vegetation that consists of grasses. lichens, & perennial herbs.

Tags

NGSS.MS-LS2-4

A plain full of grasses and scattered trees & shrubs; found in tropical and subtropical habitats and mainly in regions with a dry climate, such as East Africa.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

A region that has little to no vegetation, long periods without rain, & extreme temperatures; usually found in warm climates.

A community (or biome) that is dominated by grasses, has few trees, characterized by cold winters and intermediate rainfall between that of a forest & desert.

Tags

NGSS.MS-LS2-4

A type of vegetation that includes broadleaf evergreen shrubs and is located in areas with hot dry summers and mild wet winters.

This picture of the carbon cycle is an example of

• physical model

• mathematical model

• conceptual model

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

What is a scientist doing when she listens to the sounds that an elephant makes?

• making a conclusion

• making observations

• analyzing data

• making a hypothesis

In a scientific investigation, the size of the sample population should be large enough to

• Reflect the probability of an unwanted outcome

• Give an accurate estimate of the whole population

• Closely resemble the system they represent

• All of the above

What is the first step in an environmental decision making model?

• a. Explore the consequences of each option

• Consider which values apply to the issue

• Make a decision

• Gather information

Tags

NGSS.MS-ETS1-1