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19 questions
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- Multiple ChoicePlease save your changes before editing any questions.
The study of the interactions of living things with each other and their physical environment.
ecology
limiting factor
biotic factor
abiotic factor
- Multiple ChoicePlease save your changes before editing any questions.
the living and nonliving things present in an ecosystem that prevent a population from growing beyond a certain size, including food, water, available mates, and predators
ecology
limiting factor
biotic factor
abiotic factor
- Multiple ChoicePlease save your changes before editing any questions.
all living things in an ecosystem, including animals, bacteria, plants, fungi, and other living species
ecology
limiting factor
biotic factor
abiotic factor
- Multiple ChoicePlease save your changes before editing any questions.
all nonliving things in an ecosystem, including water, rocks, sunlight, weather, natural disasters, oxygen, space, hunting, and shelter
ecology
limiting factor
biotic factor
abiotic factor
- Multiple ChoicePlease save your changes before editing any questions.
What was the goal of Biosphere 2?
a self-sustaining ecosystem
create limiting factors to keep the population from growing
create a new source of oxygen
to farm animals for food
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Which one is an abiotic factor?
water
tree
worm
wolf
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Which one is a biotic factor?
water
sunlight
air
fungus
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In an ecosystem, living things are called _ and non-living things are called _.
biotic, abiotic
abiotic, biotic
organisms, decomposers
herbivores, decomposers
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What happens if a population grows past its carrying capacity?
The population keeps growing
The population starts to die off
The entire species will go extinct
The carrying capacity just increases
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This may cause a population to increase
increase of food supply
removal of predators
removal of disease
all of these
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Something that regulates the size of a population is called...
a limiting measure
a limiting factor
carrying capacity
biodiversity
- Multiple ChoicePlease save your changes before editing any questions.Which of the following would INCREASE the carrying capacity of an ecosystem?increase in predatorsdiseaseincrease in available fooddrought
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When death rate is equal to birth rate...
population increases
population decreases
population stays the same.
population rapidly increases then becomes stable
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What is an autotroph?
can synthesize their own food
are dependent on other organisms for their food
decomposer
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What is an heterotroph?
can synthesize their own food
are dependent on other organisms for their food
decomposer
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What is a saprophyte?
can synthesize their own food
are dependent on other organisms for their food
decomposer
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What are three types of symbiotic relationships?
mutualism, commensalism, parasitism
population, community, organism
biotic, abiotic, limiting factor
saprophyte, heterotroph, autotroph
- Multiple ChoicePlease save your changes before editing any questions.
An ecosystem cannot survive without...
sunlight
rabbits
trees
soil
- Multiple ChoicePlease save your changes before editing any questions.
What is a niche?
the job of an organism in an ecosystem
a tree branch with a notch cut out of it
water eroding soil from the edge of a river
plants competing for sunlight