16 terms

HMH Chapter 5.1 Environmental Science

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photosynthesis
the process by which plants use sunlight to produce energy
6CO2 + 6H2O + light --> C6H12O6 + 6O2
producer
an organism that makes its own food
by using energy from the sun- ALL PLANTS
consumer
An organism that obtains energy by feeding on other organisms
decomposer
consumers that get their food by breaking down dead organisms
cellular respiration
the process of breaking down food to yield energy
food chain
the sequence in which energy is transferred from one organism to the next organism
food web
a diagram that shows the feeding relationships between organisms in an ecosystem
trophic level
each step in the transfer of energy through a food chain or food web
autotrophs
Organisms that make their own food
heterotroph
An organism that cannot make its own food.
chemosynthesis
process in which chemical energy is used to produce carbohydrates
herbivores
Consumers that eat only plants
carnivores
An organism that eats only other consumers (meat eater)
carbohydrates
the starches and sugars present in foods
omnivores
Consumers that eat both plants and animals.
ecosystem
A community of organisms and their abiotic environment. Ecosystems can be large or small.

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