Study

8th Grade Science Unit 4

  •   0%
  •  0     0     0

      Back   Restart
  • How does buffelgrass harm the Sonoran Desert?
    It outcompetes native plants by absorbing water and nutrients
  • What does eradicate mean?
    To completely destroy or get rid of
  • Name two organisms in the Sonoran Desert food web.
    Saguaro cactus, kangaroo rat
  • What does nectar do?
    Attracts pollinators like insects and bats
  • What is the role of decomposers?
    To break down dead material into simpler substances
  • What happens to bird eggs because of DDT?
    Their shells weaken, reducing hatch rates
  • What is an ecosystem?
    A network of interactions between living organisms and non-living factors
  • What are the five non-living factors of the desert?
    Light, temperature, soil, water, air
  • What is an invasive species?
    A species introduced into an ecosystem where it does not naturally belong
  • What does toxic mean?
    Poisonous
  • What are the key adaptations of cactus wrens?
    They build nests in Teddy Bear Cholla for protection
  • What is the difference between a habitat and an ecosystem?
    A habitat is where an organism lives; an ecosystem includes all interactions in the environment
  • What does DDT stand for?
    Dichlorodiphenyltrichloroethane
  • How do Saguaro cacti adapt to the desert?
    Roots spread near the surface to absorb rainwater
  • What does pollination mean?
    Moving pollen from the anther to the stigma
  • What is the main producer in Arctic ecosystems?
    Algae under the sea ice
  • What does ecology study?
    Organisms in their natural habitats and their interactions
  • Name an example of bioaccumulation.
    DDT building up in an organism's body
  • What is bioaccumulation?
    Gradual increase of a substance in an organism's body when it cannot be broken down
  • What does nocturnal mean?
    Active at night
  • What are producers?
    Organisms that convert sunlight into food, like plants
  • What is a rice paddy?
    A man-made ecosystem for growing rice
  • What is persistence in the environment?
    A substance that stays in the environment for a long time
  • What is biomagnification?
    Increase in the concentration of a toxin as you move up the food chain
  • Name a man-made ecosystem.
    Rice paddy
  • What does biodegradable mean?
    Something that can be naturally broken down by bacteria or fungi
  • What is Rachel Carson known for?
    Writing Silent Spring to raise awareness about the harmful effects of DDT
  • What is a native species?
    Organisms naturally found in their habitat
  • Name a nocturnal animal in the Sonoran Desert.
    Kangaroo rat
  • What is a food web?
    A diagram showing many interconnected food chains
    • Your experience on this site will be improved by allowing cookies.