they have thick, luxurious fur
We shouldn’t worry about otters going extinct because
commensalism
when an interaction benefits one species but has little, if any, effect on the other
interspecific competition
when members of two or more species interact to gain access to the same limited resources
parasitism
when one of the organism feeds on the body of, or the energy used by, another organism
competitive exclusion principle
the concept that two or more species annoy share the exact same ecological nice for an extend period
protective shells
this is not a method predators use to capture prey
ambush
this is not a method prey species use to avoid capture
rarely kill their hosts
parasites
coevolution
when population of two different species interact over long periods of time, changes in the gene pool of one species can lead to changes in the pool of the other
mutualism
the relationship between clownfish and sea anemone
punish the energy or body of another organism as a food source
this is not a form of nondestructive behavior between species
sea urchins
kelp forests are a very important ecosystem in marine waters by supporting important biodiversity. these kelp forests are threatened by all the following except
resource partitioning
one way that species evolve over time to reduce niche overlap is called
temperature
population dynamics examine changes to a population as a result of changing environmental conditions. these conditions include all of the following except
viability
population dynamics is the study of the way populations differ from one another in certain characteristics. which of the following is not one of these characteristics
the maximum reproductive rate of a population
biotic potential of a population
the one-way movement of individuals out of a population to another area
emigration
non-reproductive
this is not one of the age structure categories
the rate at which a population would grow with unlimited resources
the intrinsic rate of increase (r) is
carrying capacity
the maximum population of a given species that a particular habitat can sustain indefinitely without being degraded
logistic growth
exponential growth followed by a steady decrease in population growth until the population size levels off
exponential growth
when plotting the number of individuals in a population against time the data yield a j-shaped curve
a reproductive time lag between birth and death rates
this would cause a population to overshoot its carrying capacity
offspring are large in individual size
this is not true of an r-selected species
are generally less adaptable to change than r-strategists
k-strategist
cockroach
this is an r-stategist
gene flow
small, isolated populations are vulnerable to loss of genetic diversity because of four of the following genetic factors. which is not one of these factors
habitat destruction
this is an example of a density-independent population control
competition for resources
this is an example of a density-dependent population control
irruptive
some species experience an explosion of population growth to a high peak followed by a crash to a more stable lower level
a rock exposed by a retreading glacier
exhibits primary succession
acid rain
soil formation in primary succession is encouraged by all of the following except
mid successional plant species
an area filled with herbs, grasses, and low shrubs
resilience
the ability of a living system to be restored after a period of moderate disturbances
inertia
the ability of a living system to survive moderate disturabances
tolerance
late successional plats are largely unaffected by plats at earlier stages of succession
tipping point
the level beyond which any additional stress an ecosystem and global system can handle will cause an abrupt and unpredictable changes
