Plant and animal products are always renewable resources.
True
False
Question 2
Select one answer.
10 points
Human activities are the only factors that can influence theEarthâs climate.
True
False
Question 3
Select one answer.
10 points
The following are estimates from the U.S. Census BureauâsInternational Database. They are averages for populations in twodifferent groups of countries in 2012.
Group A: Total fertility 1.6 births per womanover a lifetime, life expectancy 78 years at birth, and populationgrowth rate 0.3 % per year.
Group B: Total fertility 2.6 births per womanover a lifetime, life expectancy 66 years at birth, and populationgrowth rate 1.3 % per year.
Which group do you think are the less developed countries,including most of Africa, Asia, and Latin America?
Group A nations are the less developed (lower income)nations.
Group B nations are the less developed (lower income)nations.
Question 4
Select one answer.
10 points
Which two activities are the main human activities that have ledto increased levels of atmospheric carbon dioxide (CO2)?
breathing and decomposition
burning fossil fuels and clearing forests
livestock production and rice paddy agriculture
fertilizer use and natural gas extraction
Question 5
Select one answer.
10 points
Which option lists three important greenhouse gases?
O3 (ozone), CFCs, and SO2 (sulfur dioxide)
nitrogen gas (N2), oxygen gas (O2), and carbon dioxide (CO2)
carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O)
Question 6
Select one answer.
10 points
Which best Starting in the 1950s, populations of Atlantic codwere heavily fished by highly efficient commercial trawlers.Catches started to decline in the 1970s and by 1990 several of thefisheries were completely depleted. Was the cod population arenewable resource when fished at that level? how impact changeswith development of technology?
Yes; plant and animal populations are always renewableresources.
No, because growth and reproduction of the fish couldnât keep upwith the harvest.
Question 7
Select one answer.
10 points
In a warming world, seasonal events are occurring earlier inspring and later in fall. Is this a significant problem?
Yes, because species respond differently. This can lead tomismatches between the life cycles of plants and pollinators,predators and prey, etc.
No, because all species are responding in the same way. Thegrowing season is longer, so species are likely to benefit fromthis change.
Question 8
Select one answer.
10 points
Which of the following is renewable and biodegradable?
A plastic flip-flop
A metal knife
A wooden Popsicle stick
A glass window
None of the above
Question 9
Select one answer.
10 points
What is biodiversity?
The variety of ecosystem types present within a region
Variation within a populationâs or speciesâ gene pool
The variety of life at all levels, including all of the otheroptions
Question 10
Select all that apply.
10 points
Which of the following are common benefits that humans get fromfunctioning natural ecosystems and the biodiversity that is foundthere? Select all that apply.
Grasslands and wetlands produce corn, wheat, rice and othergrain crops.
Forests prevent landslides and help protect coastlines fromstorm surges and tsunamis.
Most natural ecosystem types provide recreational opportunitiesfor hiking, wildlife watching, hunting, fishing, etc.
Mosquitoes and other disease vectors inhabit natural wetlandsand forests.
Diverse species contain countless biomolecules that may be usedas drugs or for other purposes.
