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DCA 2 Review 7th Grade

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  • What is the relationship between biodiversity and sustainability?
    The more biodiversity, the more sustainability.
  • If the grass produces 2,000J of energy, how much do the snakes receive?
    20J
  • 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
  • Name the steps of secondary succession in order using shrubs, trees, grass, climax community
    grass, shrubs, trees, climax community
  • What is/are the pioneer species for primary succession?
    Lichens and moss
  • How do deltas form?
    When water from a river slows down when it hits the ocean, it drops the sediment it was carrying
  • 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
  • What creates biodiversity?
    More ecosystems
    More abiotic factors
    More organisms
    More species
  • Define an autotroph and heterotroph
  • 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
  • Limestone and Calcium Carbonate are special types of rock that, when touched my acid rain, start to break down. What is this called?
    Physical erosion
    Chemical weathering
    Chemical erosion
    Physical weathering
  • Name all of the secondary consumers
    Rattlesnake, Tarantula, Hawk, Lizard
  • Why does biodiversity increase sustainability?
    more species and adaptations allows more organisms to adapt after events happen
  • What percent of energy is passed up an energy pyramid and how much is lost as heat?
    10% and 90%
  • How does agriculture pollute our water?
    Fertilizer, feces, sediment