scientific study interactions among organisms and their environmental, or surroundings.

levels of organization

organism, population, communities. ecosystem, biome, biosphere

group of ecosystems that have the same climate and dominant communities

a group of organisms so similar to one another that they can breed and produce fertile offspring

an organism that makes its own food, use energy from the environment to fuel the assembly of simple inorganic compounds

when autotrophs use light energy from the sun to power chemical reactions that convert carbon dioxide and water into oxygen and carbohydrates

when organisms use chemical energy to produce carbohydrates, usually performed by bacteria

heterotroph/ consumer

organisms that rely on other organisms for their energy and food supply

eat plant and animal remains and other dead matter, called detritus

series of steps in which organisms transfer energy by eating and being eaten

when the feeding relationships among the various organisms in an ecosystem form a network of complex interactions. links all the food chains in an ecosystem together

the way cells release energy from chemical bonds to produce food

each step in food chain or food web - producers, then consumer

only about 10% of energy available within one trophic level is transferred to organisms at the ext trophic level

passes the same molecules around again and again within the biosphere

when an ecosystem is limited by a nutrient that is scarce or cycles very slowly

when an aquatic ecosystem receives a large input of a limiting nutrient, immediate increase in amount of algae

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BIO CH.3 FC

Question	Answer
ecology	scientific study interactions among organisms and their environmental, or surroundings.
levels of organization	organism, population, communities. ecosystem, biome, biosphere
biome	group of ecosystems that have the same climate and dominant communities
species	a group of organisms so similar to one another that they can breed and produce fertile offspring
autotroph/producer	an organism that makes its own food, use energy from the environment to fuel the assembly of simple inorganic compounds
photosynthesis	when autotrophs use light energy from the sun to power chemical reactions that convert carbon dioxide and water into oxygen and carbohydrates
chemosynthesis	when organisms use chemical energy to produce carbohydrates, usually performed by bacteria
heterotroph/ consumer	organisms that rely on other organisms for their energy and food supply
herbivore	eat plants
carnivore	eats animals
omnivore	eats plants and animals
detritivores	eat plant and animal remains and other dead matter, called detritus
decomposers	break down organic matter
food chain	series of steps in which organisms transfer energy by eating and being eaten
food web	when the feeding relationships among the various organisms in an ecosystem form a network of complex interactions. links all the food chains in an ecosystem together
cellular respiration	the way cells release energy from chemical bonds to produce food
trophic level	each step in food chain or food web - producers, then consumer
ecological pyramid	only about 10% of energy available within one trophic level is transferred to organisms at the ext trophic level
biogeochemical cycle	passes the same molecules around again and again within the biosphere
limiting nutrient	when an ecosystem is limited by a nutrient that is scarce or cycles very slowly
algal bloom	when an aquatic ecosystem receives a large input of a limiting nutrient, immediate increase in amount of algae

Created by: Alexis01

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