Matter and Energy: Ecosystem

consumers
organisms that cannot make their own food

 examples: animals, humans

decomposers
bacterium or fungus that consumes the bodies of dead organisms and other organic waste

bacteria

producers
organisms that make their own food from inorganic molecules and energy

examples:  plants, flowers, grass, some specific kinds of bacteria and fungi

 

herbivore
plant-eater

examples: rabbits

carnivore
meat-eater
omnivore
both plan and meat-eater
trophic level
layer in the structure of feeding relationships in an ecosystem
biological magnification
an increasing concentration of a pollutant in organisms at higher trophic levels in a food web
food web
net work of food chains representing the feeding relationships among organisms in an ecosystem
food chain
series of organisms that transfer food between trophic levels in an ecosystem
biomass
total amount of organic matter present in a trophic level
ecological pyramid
diagram that shows the relative amounts of energy in different trophic levels in an ecosystem
evaporation
movement of water into the atmosphere as it changes from a liquid to a gas
legumes
a plant that has colonies of nitrogen-fixing bacteria on its roots
transpiration
evaporation of water from the leaves of plants