PCRQ W Week 10

the amount of land required to provide all the resources used by that individual.

An individual's ecological footprint is equivalent to: 1. the amount of land required to provide all the resources used by that individual. 2. the total amount of energy used by that individual. 3. the total amount of food consumed by that individual. 4. the total amount of carbon emissions from that individual's car.

is any non-native species that becomes established in a new ecosystem.

An invasive species: 1. is any non-native species that becomes established in a new ecosystem. 2. is always the competitively dominant species in an ecosystem. 3. is any species that has been genetically modified by man. 4. is any species that causes disease and death in host organisms. 5. is any species that has a negative impact on community diversity.

The study of biodiversity is important because it helps quantify the effects of human actions on changes in the traits of many populations (size, density, and distribution).

Biologists who study biodiversity describe new species and monitor species of which we are aware. Why is the study of biodiversity important in the Anthropocene? 1. The study of biodiversity is important because it helps quantify the effects of human actions on changes in the traits of many populations (size, density, and distribution). 2. The study of biodiversity is important because it provides information about the number of species that go extinct every 1000 years. 3. The study of biodiversity is important because many politicians are biologists and they can influence government policy. 4. The study of biodiversity is important because if we don't count all the species on the planet, we won't be able to identify more potential sources of food.

the small island

Consider two islands located an equal distance from a mainland, which is the colonization source. One island is large, the other is small. Which island will have a higher rate of change in species composition? 1. the small island 2. the large island 3. The rate of change in species composition will be the same on both islands. 4. Species composition does not change at equilibrium.

a species that is a habitat specialist and lives at the highest elevations

If you were studying the effects of climate change on the geographic ranges of a number of species living in the mountains, and your climate records showed that mean temperatures were increasing, which species would you be most concerned about from a conservation standpoint? 1. a species that is a habitat specialist and lives at the highest elevations 2. a species that is a habitat generalist and lives at low elevations 3. a species that is a habitat specialist and lives at low elevations 4. a species that is a habitat generalist and lives at middle elevations

clearing forests for agriculture.

In addition to burning fossil fuels, humans return CO2 to the atmosphere faster than it can be removed by: 1. clearing forests for agriculture. 2. polluting the oceans. 3. generating nutrient pollution. 4. expanding beef production.

Their distribution will decrease to areas of even higher elevation.

Many endangered species of birds in Hawaii are in danger of contracting avian malaria from mosquito bites. Many of these bird species live in the higher elevations of mountains in Hawaii, where it is too cold for the mosquitoes to exist. If global warming continues at the current estimated pace, what would you expect to happen to the distribution of these bird species? 1. Their distribution will decrease to areas of even higher elevation. 2. Their distribution will remain the same, but their population size will decrease. 3. Their distribution will increase because mosquitoes will die in the warmer regions.

an r-strategist

Many species are introduced into new areas every day through ballast water and international shipping; however, not all of these species become established or invasive. Which of the characteristics would be the most likely in a species that would establish itself and become invasive? 1. an r-strategist 2. a K-strategist 3. a primary producer 4. a detritivore