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DCA 2 Review 7th Grade

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  • If the grass produces 2,000J of energy, how much do the snakes receive?
    20J
  • Name the steps of secondary succession in order using shrubs, trees, grass, climax community
    grass, shrubs, trees, climax community
  • How do deltas form?
    When water from a river slows down when it hits the ocean, it drops the sediment it was carrying
  • What percent of energy is passed up an energy pyramid and how much is lost as heat?
    10% and 90%
  • Explain how mountains change over time using the words weathering, erosion, and/or deposition
    Wind can carry sand and when it hits mountains, it will weather away the mountainside, causing it to change
  • How does agriculture pollute our water?
    Fertilizer, feces, sediment
  • Define an autotroph and heterotroph
  • Limestone and Calcium Carbonate are special types of rock that, when touched my acid rain, start to break down. What is this called?
    Chemical erosion
    Physical erosion
    Chemical weathering
    Physical weathering
  • What is the relationship between biodiversity and sustainability?
    The more biodiversity, the more sustainability.
  • What's the difference between groundwater and surface water?
    Groundwater is underground like aquifers. Surface water is on top of the ground like rivers and lakes
  • Name all of the secondary consumers
    Rattlesnake, Tarantula, Hawk, Lizard
  • What is/are the pioneer species for primary succession?
    Lichens and moss
  • An abandoned garden has been cleared of all vegetation, and only a layer of nutrient-poor soil remains. What will most likely be observed in the garden area first?
    Weeds, Grass, Flowers
  • Why does biodiversity increase sustainability?
    more species and adaptations allows more organisms to adapt after events happen
  • What creates biodiversity?
    More ecosystems
    More species
    More organisms
    More abiotic factors