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31 terms

3rd grade science CLS

CLS in Newhall Iowa, May 21 quiz, science, 3rd grade
STUDY
PLAY
ecosystem
all the living and non living things in an environment
community
all the living things in an ecosystem
population
all the members of a certain type of a living thing in an area
habitat
the place where a plant or animal naturally lives or grows
producer
an organism that makes it's own food
consumer
an organism that eats the producer and other consumers
food chain
a series of organisims that depend on another for food
decomposer
an organism that breaks down plant and animal material
food web
several food chains that are connected
energy pyramid
a diagram that shows how energy in an ecosystem is used
parasite
an organism that lives in or on another organism
host
the organism a parasite lives on or in
carbon dioxide and oxygen cycle
the exchange of gasses between producers and consumers
5 things all living things need to survive
air, water, sun, shelter, food
the ONE thing all food that we eat comes from
plants
list 6 ecosystems
tundra, dessert, rain forest, ocean, pond, lake
3 groups that make up the energy pyramid
producers, plant eaters, meat eaters
the gas people breathe in
oxygen
difference between producers and consumers
consumers eat producers and other consumers. Producers make their own food
Step 1 of the carbon dioxide and oxygen cycle
producers give off oxygen as the make their own food
Step 2 of the carbon dioxide and oxygen cycle
Consumers take in the oxygen that the producers make
Step 3 of the carbon dioxide and oxygen cycle
Consumers give off carbon dioxide
Step 4 of the carbon dioxide and oxygen cycle
Producers take in carbon dioxide from the consumer
where the world's oxygen supply comes from
forest....plants and algae
purpose of decomposers
we need them because they break down dead plants and animals
if the part of the food chain is missing...then what happens?
they all die
what gas do people breathe out
carbon dioxide
4 types of producers
plant, grass, flower, trees
4 types of consumers
tiger, bear, fox, wolf
what organisms help each other
a squirrel and a nut
where is one organism harmed and one helped?
a tapeworm and a human