The effect of movement of people between counties has _____ effect on total world population.
a damaging
little
a great
no
The giant land tortoises of the Galapagos Islands and sequoias of California have among the longest life spans of any organisms. This indicates that they likely employ a strategy of _____.
rapid reproduction
slow growth
early sexual maturity
all of these
Density-independent factors are limiting factors whose effects are _____.
confined to the habitat of the population
determined by the degree of competition for resources
not influenced by population densities
determined by the difference between birthrate and population density
For a particular species, the carrying capacity is the maximum number of individual organisms that _____.
the species could reach in a given time period if all the offspring survive and reproduce
could be supported by a given environment indefinitely
are in their post-reproductive years
could be supported by any environment over a period of one year
The statement, "proportions of a population expressed in terms of the reproductive years of the individual organisms," refers to the population's _____.
fertility rate
reproductive strategy
age structure
carrying capacity
Population control factors whose effects increase as the size of the population increases are _____.
abiotic factors
density-dependent factors
limiting factors
density-independent factors
The production of many offspring in a short period of time is characteristic of a _______ life-history pattern.
rapid
slow
long
short
A
_______ -shaped curve describes the tendency of a population to grow without limit to its size.
S
J
M
U
a damaging
little
a great
no
The giant land tortoises of the Galapagos Islands and sequoias of California have among the longest life spans of any organisms. This indicates that they likely employ a strategy of _____.
rapid reproduction
slow growth
early sexual maturity
all of these
Density-independent factors are limiting factors whose effects are _____.
confined to the habitat of the population
determined by the degree of competition for resources
not influenced by population densities
determined by the difference between birthrate and population density
For a particular species, the carrying capacity is the maximum number of individual organisms that _____.
the species could reach in a given time period if all the offspring survive and reproduce
could be supported by a given environment indefinitely
are in their post-reproductive years
could be supported by any environment over a period of one year
The statement, "proportions of a population expressed in terms of the reproductive years of the individual organisms," refers to the population's _____.
fertility rate
reproductive strategy
age structure
carrying capacity
Population control factors whose effects increase as the size of the population increases are _____.
abiotic factors
density-dependent factors
limiting factors
density-independent factors
The production of many offspring in a short period of time is characteristic of a _______ life-history pattern.
rapid
slow
long
short
A
_______ -shaped curve describes the tendency of a population to grow without limit to its size.S
J
M
U