Cumulative Exam — Cumulative exam Answers

Which type of process occurred in the ecosystem that was affected by the 1988 fires in Yellowstone Park, which destroyed most of the vegetation but left the soil intact?

Which of the following could cause a habitat change?a.introduction of an invasive speciesb.a wildfirec.a mudslided.all of the above

Before the beginning of the Industrial Revolution, most peppered moths found in and around Manchester, England, exhibited light-colored wings speckled with black. After the Industrial Revolution, peppered moths with dark wings became predominant in the area.Which term best describes the change from more light-colored moths to more dark-colored moths?

A Russian citizen has illegally obtained a Siberian tiger and is trying to sell the tiger’s fur in the United States. What treaty does this violate?

A population’s size is unaffected by the available resource supply.

Global climate change is a concern to scientists because it_______.a.is a natural process unaffected by humansb.has never changed beforec.can have drastic effects to life on Earthd.can happen overnight

Wind, solar and geothermal power are called renewable energy sources because _______.a.tax breaks for these sources are renewed every yearb.they are continuously replenishedc.humans can replenish these sources periodicallyd.they produce few toxic byproducts

The following graph is representative of what type of population growth?a.logisticb.exponentialc.lineard.triangular

Which lists the correct order of processes that occur as water moves from a pond to a cloud and then forms rain?

Moving up trophic levels there is an increase in energy, entropy, and biomass.

Which of the following lists the levels of organizational hierarchy from most complex to least complex?

Which of the following is not a manmade cause of global warming?a.burning fossil fuelsb.deforestationc.respirationd.population growth

The wide variety of organisms present in coral reefs and their complex relationships make coral reef preservation an important priority.

Rivers and streams are biodiverse ecosystems that are sensitive to change.

What characteristic sets streams and rivers apart?a.water qualityb.direction of flowc.sized.biodiversity

What important function do stream pools serve?a.Stream pools serve as a habitat for juvenile fish.b.Stream pools serve as a habitat for organisms that have difficulty in feeding or navigating swifter areas of the stream.c.They have greater depth and lower velocity than other parts of the stream, thus allowing a habitat for organisms during dryer seasons.d.All of the above

Organisms that live in freshwater and marine biomes have developed unique adaptations that aid in their survival. Which of the following adaptations does not help an animal move through the water? a. streamlined body b. thick layer of blubber c. flippers and flattened tails d. smooth, almost furless body Please select the best answer from the choices provided

Why are cane toads in Australia considered an invasive species rather than simply nonnative?a.They are destructive to native species and have no natural predators.b.They reproduce more quickly than native species.c.They have venom glands.d.Large adult specimens are able to hunt snakes.

The Clean Air Act would be a reason for the Environmental Protection Agency (EPA) to regulate car emissions.

Ozone is formed when _______.a.two oxygen molecules combineb.an individual oxygen atom combines with an oxygen moleculec.ultraviolet radiation breaks apart four oxygen moleculesd.oxygen molecules are broken into separate atoms