A) Which of the following events would decrease competition for resources in an ecosystem?
(1 point)
a drought reduces the amount of water available to an ecosystem
a disease reduces the population of rabbits in a grassland area
a fire has killed off a portion of the vegetation
many offspring are produced in a single year
a disease reduces the population of rabbits in a grassland area
A) Which competition is exclusively intraspecific? (1 point)
competition for shelter
competition for food
competition for mates
competition for water
competition for mates
A) Which of the following best explains the connection between increased competition and the
evolution of a species by natural selection? (1 point)
Individuals that have traits that allow them to outcompete others survive better and produce more
offspring.
Individuals must become stronger to compete for resources, and this increased strength is
passed on to the next generation.
Individuals migrate to another area in order to avoid competition for limited resources in the
current ecosystem.
Individuals that must compete for limited resources are more likely to have diseases that cause
mutations.
Individuals that have traits that allow them to outcompete others survive better and produce more offspring.
A) Which of the following best explains the phrase “survival of the fittest” in terms of evolution
by natural selection? (1 point)
The strongest and fastest individuals will always survive and reproduce more often.
Only individuals that have the most mates will survive with limited resources.
The individuals that survive better and reproduce more often will pass their traits on more often.
The individuals that are the healthiest will always get more resources and survive better.
The individuals that survive better and reproduce more often will pass their traits on more often.
A) Which statement about natural selection is true? (1 point)
Evolution causes natural selection.
Natural selection only happens to animals.
Natural selection produces animals that are faster and stronger.
Natural selection produces animals fit for their environmen