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Science Questions - All Grades

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Grade 9 Biotic and Abiotic
Which of the following situations show a biotic factor operating within an ecosystem?
  1. the kind of climate in a given region
  2. carnivores that eat other animals
  3. the concentration of hydrogen gas in the air
  4. the rate of water flow in a body of water
Grade 6 Food Chains and Webs
Some beetles break down the remains of dead animals. Some mushrooms break down the remains of dead trees. These actions most benefit plants by what?
  1. returning nutrients to the soil.
  2. releasing oxygen into the air.
  3. making space for new animals.
  4. decreasing the population of herbivores.
Grade 4 Food Chains and Webs
Grade 6 Biomes
Grade 4 Communities, Populations, and Ecosystems
Grade 7 Biotic and Abiotic
What are biotic factors?
  1. Earth's weather and climate.
  2. Non-living parts of an ecosystem.
  3. Living organisms in an ecosystem.
Grade 6 Food Chains and Webs
Grade 7 Biotic and Abiotic
What are the nonliving parts of the ecosystem such as water, dirt, and air called?
  1. abiotic factors
  2. biomes
  3. biotic factors
  4. ecological factors
Grade 7 Biotic and Abiotic
Grade 4 Communities, Populations, and Ecosystems
What is an ecosystem?
  1. place where animals go eat.
  2. place where animals go to graze.
  3. community of plants and animals and the physical environment in which they live.
Grade 5 Rocks
Sedimentary rock is not formed by which of the following?
  1. the constant layering of the sediments.
  2. pressure on sediment layers.
  3. compaction and cementation.
  4. doing experiments.
Grade 6 Communities, Populations, and Ecosystems
Place the categories in order from smallest to largest.
  1. biosphere, ecosystem, community, population, organism
  2. organism, population, community, ecosystem, biosphere
  3. biosphere, population, ecosystem, community, organism
  4. organism, community, ecosystem, population, biosphere
Grade 6 Food Chains and Webs
Animals that eat other animals are                .
  1. omnivores.
  2. biomes.
  3. herbivores.
  4. carnivores.
Grade 5 Communities, Populations, and Ecosystems
Grade 9 Biotic and Abiotic
Grade 4 Food Chains and Webs
Grade 10 Food Chains and Webs
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