Environmental Resource Management 100 – UW
As the world entered the 21st century, the population reached how many billion people?
6
Environmental sustainability implies…

1. the actions of humans directly impact the well-being of the natural environment

2. future generations will have the resources necessary for a quality life
2. a shared global responsibility for conservation practices

In developed countries, what percentage of people live in urban areas?
75%
“Carrying capacity” refers to
the maximum number of individuals that can be supported by an ecosystem
A sustainable society
ensures that Earth’s resources will remain adequate to support future generations
Biota is a general term used to describe
all living things
A scientist who first sounded the alarm about the growth of the human population and the ability of the earth to handle a large population of humans was
Thomas Malthus
Longevity can be defined as
genetically determined maximum possible age to which an individual of a particular species can live
e Tsunami of December 2004 killed over 150,000 people. With a world population growth rate of 1.4%, approximately 100,000 people killed by the tsunami were replaced in
less than a day
Which of the following parameters is/are necessary to describe exponential population growth?
population size
Which of the following chemicals is most important in the transfer and use of energy within cells?
phosphorus
Which of the following elements cycles quickly and is readily regenerated for biological activity?
nitrogen
Igneous rock is produced from all of the following except
weathered materials
Nitrogen is needed to manufacture which two important biological;compounds?
proteins and DNA
What are the four major components of the environment?
atmosphere, lithosphere, hydrosphere, and biosphere
Which of the following is NOT a way in which carbon dioxide enters the atmosphere?
Photosynthesis
A species upon which the entire ecosystem depends is called;a(n)
keystone species
The First Law of Thermodynamics states that
energy cannot be created or destroyed
The function or important role of a species in an ecosystem is termed its
ecological niche
Predators…
aid in limiting the population sizes of their prey
Autotrophs;are
primary producers
Which of the following characteristics is known to make a species more vulnerable to extinction?
occupying a small (localized) range
Scientifically, ___________ is expressed as the number of species in an area.
biological diversity
How many species have been recovered in the US since the inception of the Endangered Species Act of 1973?
43
A species in imminent danger of extinction throughout all or a significant portion of its range is said to be
endangered
The goal of restoration ecology is
returning damaged, degraded, or destroyed ecosystems to a functional, sustainable and natural environment
Which of the following elements is not essential for plant growth and function?
aluminum
Facilitation happens when
first plant species prepare the way for other species’ growth
When species do not interact and succession does not take place, the result is
chronic patchiness
Early succession plants are
low growing plants that are specifically adapted to unstable conditions of the physical environment
When an ecosystem is disturbed by __________, changes occur in its biogeochemical cycling.
human activity, storms, and fire.
Strip cutting in a forest is
the practice of cutting narrow rows of trees, leaving wooded corridors
Tree growth rings are produced at the rate of _______per year.
one
Managing wildlife to keep populations at a constant level is not always successful because:
populations are naturally variable
Nearly two-thirds of all the wood produced in the world is used for
firewood
A natural, important ecological function of forests is:
maintaining watersheds
_________ founded the US Forest Service and practiced utilitarian conservation of forests
Gifford Pinchot
Which of the following needs to be considered when harvesting a product from an ecosystem?
A) sustainability of the product
B) the sustainability of the harvest
C) the sustainability of the ecosystem itself
When did the most dramatic increase in the history of the human population occur?
in the last part of the twentieth century
The most serious problem caused by population growth is:
increasing demand for all resources
Total world population is
6.6 billion
Doubling time is
the time it takes for what is growing to double in size or number
Which of the following examples describes the movement of a nation from a high population growth to a low population growth?
demographic transition
Which of the following examples describes the S-shaped curve according to which a population grows rapidly but eventually reaches a constant population?
logistic growth curve
The current United States population has exceeded
300 million
Which of the following diseases is NOT a chronic disease?
influenza
A population that has achieved Zero Population Growth has:
neither increased nor decreased in size
The main unknown factor in any human population growth scenario is
Earth’s carrying capacity
Which of the following chemicals used in agriculture is a potential source of water pollution?
nitrogen
Average residence time is short in the:
atmosphere
Plate tectonics involve:
creation and destruction of the lithosphere
Photosynthesis involves all of the following except:
nitrogen
When studying biogeochemical cycles, it is important to consider the movement of these chemicals through which of the following?
A) land;
B) air;
C) water and living things;
Two of the most important greenhouse gases are:
carbon dioxide and methane
The simplest environmental unit that can support life is called a(n):
ecosystem
The total amount of organic matter in an ecosystem or area is called:
biomass
An organism’s role, or life style, within the structure of an ecosystem is its
ecological niche
Which of the following best exemplifies trophic levels in a food web?
autotrophheterotrophdecomposer
Decomposers are:
an essential part of ecosystems
Which of the following is not a process that leads to evolution?
species richness
A species isolated on a remote island can:
undergo evolutionary divergence
An increase in organic matter________the storage of nutrients.
increases
Which plants are the first to grow on abandoned farmlands?
small annual or perennial plants
Organic matter is very important in soil because it stores:
nutrients
A bog is
a body of water with surface inlets but no surface outlets
Secondary succession occurs:
with reestablishment of an ecosystem after disturbance
Shelterwood cutting of a forest is
the practice of cutting less desirable trees first, and later cutting mature trees
Early successional trees regenerate easier with
clearcutting
Forests:
maintain watersheds
Northern spotted owls make their home in:
old growth conifers
Current wildlife management practices
maintain the ecosystem of which the wildlife are part
Plantation forests
produce much more timber than natural forests
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