Module 3 Exam Review

Which explains why secondary succession generally occurs more rapidly in an area than does primary succession?

• average precipitation is higher

• pioneer species are microscopic

• moderate climatic conditions exist

• soil formation has already occurred

Conifer trees dominate boreal forests rather than tundra because of __.

• direct rays of light hitting the biome

• a lack of permanently frozen soil

• mild climatic and weather conditions

• the absence of better-adapted trees

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Which defines a biome as a desert?

• a region of few or no trees

• annual rainfall less than 10 cm/yr

• area with no organic matter in the soil

• rate of evaporation higher than precipitation

Which explains why few animal species live in a fast-flowing river?

• Cold water lowers dissolved oxygen levels

• frothing water reflects sunlight away from autotrophs

• few animals are adapted to withstand high-speed water

• currents prevent the accumulation of most organic matter

The aquatic ecosystem that has the greatest biodiversity is a(n) __.

• swamp

• estuary

• bog

• wetland

Tags

NGSS.MS-LS2-5

The zone that would support the greatest variety of coral reef ecosystems is the __.

• photic zone

• aphotic zone

• limnetic zone

• benthic zone

Tags

NGSS.MS-LS2-3

The biggest reason for the climatic differences between Anchorage, Alaska and Kingson, Jamaica is __.

• distance from the equator

• proximity to warm ocean currents

• location on either a continental land mass or an island

• size of the human population contributing to climate change

Tags

NGSS.MS-ESS2-6

Most of the world's grasslands have been destroyed by human activity.  What is the main human activity that has led to grassland biome destruction?

• slash and burn agriculture

• mining

• agriculture

• urbanization

Tags

NGSS.MS-LS2-5

In mountainous regions there is often a point up a mountain in which trees no longer grow.  It is often called the tree line.  Which statement best explains why a tree line occurs?

• There is too little soil

• Snow prevents trees from growing

• trees that grow there are premium lumber and get cut down first

• Above a certain altitude most of the water vapor has been forced to precipitate due to cooling atmospheric temperatures

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

An area of forest that experiences very little change in species composition is a ___.

• climax community

• secondary succession

• primary succession

• ecological succession