Share 8th Grade Science Unit 4
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What are the five non-living factors of the desert?
Light, temperature, soil, water, air
What does nocturnal mean?
Active at night
What is bioaccumulation?
Gradual increase of a substance in an organism's body when it cannot be broken down
What does biodegradable mean?
Something that can be naturally broken down by bacteria or fungi
What is biomagnification?
Increase in the concentration of a toxin as you move up the food chain
What does eradicate mean?
To completely destroy or get rid of
What is an invasive species?
A species introduced into an ecosystem where it does not naturally belong
What is a native species?
Organisms naturally found in their habitat
What is an ecosystem?
A network of interactions between living organisms and non-living factors
What is a food web?
A diagram showing many interconnected food chains
What are producers?
Organisms that convert sunlight into food, like plants
What does toxic mean?
Poisonous
What is Rachel Carson known for?
Writing Silent Spring to raise awareness about the harmful effects of DDT
What does DDT stand for?
Dichlorodiphenyltrichloroethane
What is the role of decomposers?
To break down dead material into simpler substances
Name a man-made ecosystem.
Rice paddy
