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Eighth Grade (Grade 8) Ecology Questions

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Grade 8 Food Chains and Webs
Grade 8 Conservation and Biodiversity
The illegal killing or removal of wildlife from their habitats is known as
  1. poaching
  2. habitat destruction
  3. habitat fragmentation
  4. deforestation
Grade 8 Communities, Populations, and Ecosystems
Grade 8 Communities, Populations, and Ecosystems
Grade 8 Biogeochemical Cycles
Which cycle most likely includes sunlight, photosynthesis, and respiration?
  1. water cycle
  2. carbon cycle
  3. oxygen cycle
  4. nitrogen cycle
Grade 8 Conservation and Biodiversity
Grade 8 Conservation and Biodiversity
Grade 8 Communities, Populations, and Ecosystems
The most common ecosystems on earth are                          .
  1. land ecosystemns
  2. aquatic ecosystems
  3. ocean (marine) ecosystems
  4. biomes
Grade 8 Biotic and Abiotic
Predators can be classified as what type of influence?
  1. living
  2. nonliving
  3. genetic
  4. inorganic
Grade 8 Communities, Populations, and Ecosystems
Grade 8 Food Chains and Webs
Grade 8 Biotic and Abiotic
Select the letter of EACH choice that is a biotic factor in a prairie dog ecosystem.
  1. grass and other plants that the prairie dog eats
  2. hawks, ferrets, and other animals that hunt prairie dogs
  3. the soil that provides the prairie dog with a home
  4. worms, fungi, and bacteria that also live in the soil
Grade 8 Food Chains and Webs
Grade 8 Food Chains and Webs
If a carbon atom were to be traced through the following organisms, the order in which it is likely to be detected would be
  1. small bird → grasshopper → lizard →plant
  2. lizard→ grasshopper → plant → small bird
  3. grasshopper → plant → small bird → bird
  4. plant → grasshopper → lizard → small bird
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
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