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Eighth Grade (Grade 8) Communities, Populations, and Ecosystems Questions

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Grade 8 Communities, Populations, and Ecosystems
Which would be a biological indicator for an ecosystem?
  1. pH levels going up in a local pond.
  2. turbidity levels going down in a river
  3. trout populations increasing in a local river
  4. none of the above
Grade 8 Communities, Populations, and Ecosystems
Grade 8 Communities, Populations, and Ecosystems
Grade 8 Communities, Populations, and Ecosystems
Grade 8 Communities, Populations, and Ecosystems
Grade 8 Communities, Populations, and Ecosystems
Grade 8 Communities, Populations, and Ecosystems
Grade 8 Communities, Populations, and Ecosystems
Grade 8 Communities, Populations, and Ecosystems
Which choice lists the levels of organization in an ecosystem from smallest unit to largest?
  1. Population, organism, community, ecosystem
  2. Organism, population, ecosystem, community
  3. Organism, community, population, ecosystem
  4. Organism, population, community, ecosystem
Grade 8 Communities, Populations, and Ecosystems
Grade 8 Communities, Populations, and Ecosystems
Competition for food, living space, or other resources can                         .
  1. limit population growth
  2. cause exponential growth
  3. stop symbiosis
  4. none of the above
Grade 8 Communities, Populations, and Ecosystems
Grade 8 Communities, Populations, and Ecosystems
Grade 8 Communities, Populations, and Ecosystems
Grade 8 Communities, Populations, and Ecosystems
What are the five levels of environmental organization from largest to smallest.
  1. Biosphere, ecosystem, community, population, organism
  2. ecosystem, biosphere, population, organism, community
  3. biosphere, population, ecosystem, community, organism
  4. Biosphere, ecosystem, population, community, organism
Grade 8 Communities, Populations, and Ecosystems
What is the difference between an ecosystem and a biosphere?
  1. An ecosystem is all living and non-living organisms in an area. Biosphere is one plant or animal.
  2. An ecosystem is more than one organism that is the same species. Biosphere is where all living things live.
  3. An ecosystem is all living and non-living organisms in an area. Biosphere is where all living and non-livings are
  4. An ecosystem is more than one organism of different species. Biosphere is a something that is eaten by another organism.
Grade 8 Communities, Populations, and Ecosystems
An ecosystem goes through a flood. This would be an example of what?
  1. niche
  2. carrying capacity
  3. climax community
  4. limiting factor
Grade 8 Communities, Populations, and Ecosystems
Grade 8 Communities, Populations, and Ecosystems
Which of the following allows for an increase in population?
  1. immigration
  2. emigration
  3. death
  4. buying a pet
Grade 8 Communities, Populations, and Ecosystems
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