Exam 18: The Biosphere and Human Effects

Which of the following primary succession events led to the formation of the tundra?

What happens as air cools?

Classification.The statements ask about the various key features that can be used to identify a particular biome.Match each key feature with the appropriate biomes. a.chaparral b.tropical rainforest c.temperate deciduous forest d.boreal forest e.tundra f.desert g.savanna -the most species rich biome

Match the aquatic ecosystem with its description. a.lakes b.streams c.estuary d.ocean shores e.coral reefs f.open ocean g.seamounts h.hydrothermal vents -main producers are dinoflagellates

Why is it warmer in the tropics?

Match the aquatic ecosystem with its description. a.lakes b.streams c.estuary d.ocean shores e.coral reefs f.open ocean g.seamounts h.hydrothermal vents -primary producers are algae and bacteria; grazing food chains predominate

Of the following countries,which of them control and have natural resources rights to the Arctic?

Which country receives the most sunlight per year?

What is an undersea mountain called?

Which coastal region is where seawater and freshwater mix?

Match the aquatic ecosystem with its description. a.lakes b.streams c.estuary d.ocean shores e.coral reefs f.open ocean g.seamounts h.hydrothermal vents -the type of rock,depth,and temperature affects species composition along its length

The genetic diversity within a species of a given region is called the

The crash of the Atlantic codfish is the result of

Match the aquatic ecosystem with its description. a.lakes b.streams c.estuary d.ocean shores e.coral reefs f.open ocean g.seamounts h.hydrothermal vents -area of greatest species richness

Which gas has had the greatest impact on life on earth?

Because they are filter feeders,oysters are most sensitive to pollution levels in their habitat and among the first organisms to suffer if pollution levels become too high.Oysters are an example of ___ species.

Which aquatic ecosystem is known as the marine nursery?

The conversion of grasslands or woodlands to desert-like conditions is called

As global temperatures increase,Arctic sea ice becomes thin and breaks up earlier each spring.What potential consequence described in the text might this directly lead to?

Match the aquatic ecosystem with its description. a.lakes b.streams c.estuary d.ocean shores e.coral reefs f.open ocean g.seamounts h.hydrothermal vents -found on the ocean floor