Exam 1 Questions Flashcards
(30 cards)
The two processes that determine the world’s current biodiversity are _______
extinction and speciation rates
Who is credited for articulating the conservation ethic and for founding the U.S. Forest Service
Gifford Pinchot
In a controlled experiment, ________
the researcher controls for the effects of all variables except one
_______ are typical primary consumers in a temperate deciduous forest.
Deer
Secondary succession ________
occurs after a fire or flood
To determine your specific impacts on the environment, you can ________
calculate your ecological footprint
The relationship between flowering plants and bees is best described as ______
mutualism
Nonrenewable natural resources include all of the following EXCEPT
wind
The process by which several researchers review another researcher’s manuscript prior to
publication to ensure research quality is referred to as ____
peer review
External costs include ________.
C) utilities
Grazing animals such as deer are _____
primary consumers
One example of artificial selection is ______
roccoli, cauliflower, cabbage, and Brussels sprouts bred from Brassica oleracea
Endemic species _______
are found only in one place on the planet
Biological nitrogen fixation is carried out by ______
specialized bacteria
DNA is composed of units called ______
nucleotides
Which of the following is an example of an ecological community?
A) all of the bears, wolves, elk, moose, aspen trees, lodgepole pine trees, and all other
animals and plants in Yellowstone National Park
The energy content and biomass of ________ is lowest in any terrestrial food web
top carnivores
Which of the following would be an example of a density-independent factor?
cold weather causing a lake to freeze
Which of the following descriptions of a hummingbird best describes its niche
eats mosquitoes
Heavy rains and mudslides cause a river to change course, isolating two groups of lizards of the
same species from one another. Over a long period of time, _______
the groups will probably diverge genetically, and speciation may occur
A coyote, which can alter its food intake to match seasonal abundance of plants, fruits, or small
animals, is considered to be ____
a generalist
ssues of ________ are environmental issues whose dimensions include differential exposure to
risk from toxic wastes and air pollution or differential access to the natural beauty of parks
based on ethnicity or race.
environmental justice
_______ gives inherent value to certain living things or to the biotic (living) realm of the earth
in general; both human and nonhuman lives have ethical standing
Biocentrism
When the organisms of a particular population seek habitats or resources that are unevenly
spaced, the distribution of the individuals in the population tends to be ________
clumped
