Unit Test — Cumulative exam Answers

How is the heat generated by the reactor core of a nuclear power plant used to provide power to buildings?a.It is used directly to heat homes and offices.b.It generates steam, which turns a turbine, powering a generator.c.It generates steam, which is then condensed back to water. This process produces energy.d.All of the above

What is an advantage to alternative energy technology?a.Using alternative energy technology increases the demand for fossil fuels.b.Most alternative energy technologies use nonrenewable resources.c.Alternative energy technology can reduce the environmental impact of burning fossil fuels.d.There is no advantage to using an alternative energy technology.

Why is phytoplankton located near the ocean’s surface?a.It cannot live in areas of high salinity.b.It can more easily evade predators on the oceans’s surface.c.It needs access to oxygen only found at the ocean’s surface.d.It needs sunlight to survive.

Which of the following energy sources is expected to have the highest rate of consumption in 2030?a.coalb.natural gasc.nucleard.renewable energy

Sustainability can be achieved through careful resource management.

Which of the following is(are) true concerning the 2004 tsunami in Indonesia?a.It had minimal human casualties.b.The tsunami waves were as high as 500 feet.c.It was triggered by magnitude 9.1 earthquake.d.All of the above

Fossil fuels are an important natural resource used by society. Which of the following best describes fossil fuels? a. They are any liquid fuel derived from once-living matter. b. They are organic fuels derived from ancient plants and animals. c. They are fuels in which dinosaur fossils are commonly found. d. They are naturally occurring inorganic fuels like coal and petroleum. Please select the best answer from the choices provided

Freshwater biomes have _______.a.organisms adjusted to high salinityb.more diversity than marine biomesc.a salinity of less than 1%d.the ability to maintain their temperature year round

Nuclear power is an example of an alternative energy source that has greater negative environmental impacts than the burning of fossil fuels.

Which of the following best explains how human activities can directly contribute to landslides? a. Removing plants from hillsides eliminates the root structures that anchor soil. b. Clearing trees from hills increases the frequency of rainstorms. c. Human activities tend to reduce the risk of fires. d. Landslides are not impacted by human activities. Please select the best answer from the choices provided

After the energy crisis of the 1970’s and the OPEC oil embargo, the US _______.a.increased its dependency on foreign oilb.began to wean itself off of foreign oil and the economic vulnerability it bringsc.changed over to all renewable energy sourcesd.began building new nuclear power plants to replace fossil fuel use

Which of the following is a negative consequence of scientific advancements on society?a.increased life expectancyb.increased pollutionc.new energy resourcesd.all of the above

An understanding of how human activity affects the environment is important for environmental policy makers.

The use of nonrenewable resources can help sustain poverty levels.

What will happen to the frequency of the recessive allele for the HbS gene when there is an outbreak of malaria?

Which component of the cardiovascular system allows the body to function by supplying the cells with oxygen?

Coastal urbanization does not increase the risk to human communities from which of the following natural disasters?a.earthquakesb.floodsc.hurricanesd.cyclones

Populations of organisms that exhibit a high degree of variation have a greater chance for survival than populations of organisms that show little variation. This statement is

Consider the group of giraffes in the image below.Which statement about the giraffes explains their evolution based on Charles Darwin’s main points?

Read the following passage from the Biology Department at University of California, Berkeley.Northern elephant seals have reduced genetic variation because hunting by humans reduced their population size to as few as 20 individuals at the end of the 19th century. Their population has since rebounded to over 30,000, but their genes still carry the marks of this near extinction: they have much less genetic variation than a population of southern elephant seals that was not hunted as intensely.Which of the following best describes how the population has evolved?