Ch. 6. Ecosystems

In addition to northern latitudes, patches of tundra-like plant communities are also found

•   in cold deserts.

•   in marshes.

•   in bogs.

•   on mountain tops.

Tags

NGSS.MS-LS2-2

Which of the following is NOT a characteristic of temperate deciduous forests?

•   They have fewer species than a tropical rainforest.

•   They contain shade-tolerant spring wildflowers.

•   They produce useful plant products such as cashew nuts, vanilla, and rubber.

•   They keep their leaves throughout the year.

Which is an example of a stage in secondary succession?

•   bare rock produced from a volcano

•   a forest regenerating after a forest fire

•   a new lake produced by damming a river

•   pure sand

Tags

NGSS.MS-LS2-4

A floating bog is an example of a stage in

•   secondary succession.

•   aquatic primary succession.

•   terrestrial primary succession.

•   a climax community.

Tags

NGSS.MS-LS2-4

Savannas differ from grasslands by having

•   less annual precipitation.

•   no grazers.

•   lower average annual temperature.

•   a period of the year with heavy rain followed by a lack of rainfall.

Tags

NGSS.MS-ESS2-6

Shallow, warm, nutrient-rich lakes are described as

•   oligotrophic.

•   benthic.

•   eutrophic.

•   limnetic.

The only thing that differentiates a “climax” community from a successional one is

•   the time scale over which change occurs.

•   the size of the geographical area.

•   the limits of water.

•   the level of oxygen available.

Tags

NGSS.MS-LS2-4

The distribution of terrestrial ecosystems is primarily related to

•   oxygen and nitrogen.

•   trans boundary migration.

•   natural corridors.

•   precipitation and temperature.

Tags

NGSS.MS-ESS2-4

An important determiner of the nature of aquatic ecosystems is

•   the amount of salt dissolved in the water.

•   the amount of oxygen in the water.

•   the amount of sediments in the water.

•   the amount of nitrogen in the water.

Tags

NGSS.MS-LS2-4

The amount of oxygen used by decomposers to break down a specific amount of organic matter is called

•   biochemical oxygen demand.

•   eutrophic nitrogen demand.

•   oxygen replenishment.

•   decomposition demand.