WorksheetsTopic 3: Population in an Ecosystem
Total questions: 11
Worksheet time: 9mins
What is a geographic distribution?
resources become less available, growth slows or tops
the area a population lives (range)
the number of individuals in an area
reproduce at a constant rate
term for the number of individuals in an area
(a)
how do populations grow? (population growth)
emigration
immigration
deaths
organisms leaving the population
what type of curve does a graph with exponential growth have?
(a)
what type of curve does a graph with logistical growth have?
(a)
What is the carrying capacity?
causes population growth to decrease
depends on population size
does not depend on population size
the number an environment can support
a limiting factor causes population growth to (a)
Density-dependent factors _____ on population size and density-independent factors ______ on population size.
(a)
What are some examples of density-dependent factors?
competition, predation, parasitism, disease
unusual weather, natural disasters, some human activities
competition, unusual weather, disease
parasitism, natural disasters, some human activities
What are some examples of density-independent factors?
unusual weather, some human activities, disease
competition, predation, parasitism, disease
unusual weather, natural disasters, some human activities
predation, natural disasters, parasitism
A dramatic change in birth and death rates is (a) .
