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Every spring, many species of bird travel north to the Arctic to breed, and in the fall travel south again for the winter. This is an example of
community
migration
the amount of available food.
saltmarsh ecosystem.
an ecosystem
immigration and emigration
logistic growth
sex ratio
A population’s growth rate is determined by births, deaths,
community
migration
the amount of available food.
saltmarsh ecosystem.
an ecosystem
immigration and emigration
logistic growth
sex ratio
“All the living things and their physical environment within a given area” best defines
community
migration
the amount of available food.
saltmarsh ecosystem.
an ecosystem
immigration and emigration
logistic growth
sex ratio
You will be conducting a study of the interactions of vegetation, animals, mineral composition of the soil, and water levels in a saltmarsh. You are studying the
community
migration
the amount of available food.
saltmarsh ecosystem.
an ecosystem
immigration and emigration
logistic growth
sex ratio
In a population of 100 monkeys, you count 48 males and 52 females. This population has an approximately even
community
migration
the amount of available food.
saltmarsh ecosystem.
an ecosystem
immigration and emigration
logistic growth
sex ratio
An example of a density dependent limiting factor is
community
migration
the amount of available food.
saltmarsh ecosystem.
an ecosystem
immigration and emigration
logistic growth
sex ratio
A population of wolves is reintroduced into Yellowstone National Park. For the first decade, the wolf population grows exponentially. Then, the population growth slows. The new pattern is known as
community
migration
the amount of available food.
saltmarsh ecosystem.
an ecosystem
immigration and emigration
logistic growth
sex ratio
Giraffes, lions, zebras, hyenas, and all the other living things of the Serengeti make up a(n)
community
migration
the amount of available food.
saltmarsh ecosystem.
an ecosystem
immigration and emigration
logistic growth
sex ratio
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