A bird’s nest in a tree is an example of ___________.
an ecological niche
A keystone species is a particular species in a community that competes with all other species in that community for nutrients.
Which of the following biomes has the higher primary productivity?
temperate deciduous forest
The amount of a nutrient that moves from one component of the environment to another within a specified period of time is called the
Approximately 25% of all fresh water is used to irrigate crops.
Hydropower is considered a renewable energy source.
Most “green revolution” plants require relatively little fertilizer and pesticides.
Most terrestrial organisms can live in a salty environment.
The majority of biological extinctions are due to
invasion by exotic species.
fossil fuel emissions.
Scientists predict that the atmospheric ozone shield will recover from the damage wrought by chlorofluorocarbons.
The majority of humans live in ___________.
Aquaculture is a practice designed to decrease the amount of water used in irrigating crops.
The California Geysers project is designed to harvest ____________.
Today’s society is a sustainable society.
The growth of equilibrium populations is regulated by density-dependent effects.
The human population of the MDCs as a whole
has always had a low growth rate.
has had a death rate exceeding the birth rate since 1950.
has grown modestly since 1950.
has grown exponentially since 1950.
is expected to increase by 5 billion by 2050.
Replacement reproduction (each couple producing only two children) always leads to zero population growth.
Which of the following is the correct order of biological organization from largest to smallest?
The age structure of a population is used to determine the impact of the population on resource consumption.
The carrying capacity is constant within any defined geographical location.
Which of the following is not considered when determining the biotic potential of a population?
the age at which reproduction begins
the chances of survival until reproductive age
the age at which reproduction ends
the frequency of reproduction per individual
the number of offspring per reproduction
The process of evolutionary change in one species causing evolutionary change in another species is called parallelism.
The term ______________ is used to describe the various species and the relative abundance of each in a community.
Photoautotrophs using carbon dioxide from the atmosphere for their own needs is an example of a reservoir.
Which of the following is a requirement for secondary succession to occur?
a climax community