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Ecosystems

Terms in this set (20)

ecosystem
all the living and nonliving things that interact in an area
community
All the different populations that live together in an ecosystem
population
all the organisms of the same species that live in the same area at the same time
biome
A group of ecosystems with similar climates and organisms
climate
the long-term average weather patterns that occur in a particular region
atmosphere
the thin layer of gases surrounding the earth
condensation
the process by which water vapor changes into liquid water
photosynthesis
the process of chemical reactions that convert light energy, water, and carbon dioxide into the food-energy molecule glucose and give off oxygen
food chain
a model that shows how energy flows in an ecosystem through one line of feeding relationships
food web
a model of energy transfer that shows how food chains in a community are interconnected
energy pyramid
a model that shows the amount of energy available to be transferred in each link of a food chain
autotrophs
producers, organisms that can make their own food
heterotrophs
consumers, they rely on other organisms for their energy and food supply
scavenger
a consumer, specifically a carnivore, that eats the dead bodies (carcasses) of other animals
decomposer
an organism that breaks down dead and decaying matter and helps recycle the nutrients
predator
an organism that actively hunts its food
prey
an organism that gets hunted by other organisms
habitat
the natural place within an ecosystem where an organism lives
niche
the way a species interacts with abiotic and biotic factors to obtain food, find shelter, and fulfill other needs
species
A group of similar organisms that can breed and produce fertile offspring.
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