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Study Quiz 2.3: Factors in Ecosystems that Limit Populations
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Any abiotic or biotic factor that controls the number of individuals in a population is
A)a pollutant
C)a bioaccumulation indicator
D)a limiting factor
A population that has reached the largest number of individuals that the environment can support over a long period of time
A)has no limiting factors
B)contains only top consumers
C)has reached its carrying capacity
D)has changed from a food chain to a food web
The predator-prey cycle shows
A)how one population can limit another population
B)how wolves and elk maintain a mutualistic relationship
C)how bioaccumulation helps maintain balance in nature
D)how pollutants are recycled through species in the environment
Some examples of how diseases and parasites can limit populations are
A)bioaccumulation and canine distemper
B)spruce broom rust and canine distemper
C)canine distemper and pollutants
D)population change and spruce broom rust
Competition for resources is a limiting factor because
A)there is only a limited amount of food and living space available in any ecosystem
B)predator-prey populations often increase and decrease in cycles
C)abiotic factors such as light, water, and temperature are present
D)cities, highways, campgrounds and orchards provide alternate environments for animals and plants
One of the main reasons wildlife populations become threatened is
A)loss of limiting factors
B)loss of habitat
C)loss of natural disturbances
D)loss of carrying capacity
Limiting factors such as landslides, forest fires, floods and extreme weather are all
A)ways organisms compete for resources
B)caused by ecological succession
C)natural disturbances
D)predator-prey cycles
Many scientists call the steady increase in the temperature of Earth's atmosphere
A)the carbon cycle
B)natural disturbances
C)extreme population control
D)global warming
The gradual change in the make-up of a biological community over time is called
A)ecological predation
B)ecological succession
C)ecological competition
D)ecological disturbance
In the process of ecological succession, organisms that are present at one stage change
A)the environment in some way
B)from abiotic to biotic factors
C)from producers to consumers
D)the relationship between global warming and natural disturbances

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