Environmental Science Chapter 18 Flashcards
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Environmental Science Chapter 18 Flashcards

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Questions and Answers

Which of these are examples of biotic factors in a desert ecosystem? (Select all that apply)

  • Snakes (correct)
  • Cactus (correct)
  • Spiders (correct)
  • Sand
  • Which of these are examples of abiotic factors in a desert ecosystem? (Select all that apply)

  • Cactus
  • Sunlight (correct)
  • Wind (correct)
  • Water
  • What is the role of decomposers in ecosystems?

    Decomposers break down dead organisms and return organic materials to the ecosystem.

    How does energy move through ecosystems?

    <p>Energy moves from radiant energy from sunlight to chemical energy used by organisms.</p> Signup and view all the answers

    How do biotic and abiotic factors differ between a large ecosystem like a South American rain forest and a mini-ecosystem like a bromeliad?

    <p>In a large ecosystem, components are more independent; in a mini-ecosystem, they are more dependent on the environment.</p> Signup and view all the answers

    What makes the ecosystem around Yellowstone National Park's hot springs unique?

    <p>It is unique because the hot springs create miniature, self-sustaining ecosystems with special biota.</p> Signup and view all the answers

    What interactions occur in a garden?

    <p>Interactions occur between soil, air, rainwater, and the community.</p> Signup and view all the answers

    How do plants change their environment?

    <p>Plants remove and release oxygen and CO2 in the soil and air; insects and birds also interact with them.</p> Signup and view all the answers

    How do the activities of animals affect the environment?

    <p>Animals take in oxygen released by plants and release CO2.</p> Signup and view all the answers

    How does climate affect the biota within an ecosystem?

    <p>Climate affects the biota greatly, as only specific biota can survive certain climates.</p> Signup and view all the answers

    What is the role of water in the formation of ecosystems?

    <p>Water provides necessary sources for plants and animals; life can't exist without water.</p> Signup and view all the answers

    Select a biome in which you would like to live and tell why.

    Signup and view all the answers

    Study Notes

    Desert Ecosystem

    • Biotic factors include organisms like cacti, spiders, and snakes.
    • Abiotic factors consist of elements such as sunlight, wind, and sand.

    Decomposers

    • Play a crucial role in breaking down dead organisms.
    • Return organic materials back to the ecosystem, which helps cycle matter and energy.

    Energy Movement in Ecosystems

    • Energy originates from sunlight as radiant energy.
    • Organisms convert this radiant energy into chemical energy for life processes.

    Ecosystem Comparison

    • Large ecosystems like South American rain forests display greater independence among species.
    • Mini-ecosystems, such as bromeliads, demonstrate greater dependency on their immediate environment.

    Unique Yellowstone Ecosystem

    • Hot springs in Yellowstone National Park house self-sustaining mini-ecosystems with unique biota.

    Garden Interactions

    • Interactions in a garden involve the soil, air, rainwater, and the surrounding community of organisms.

    Impact of Plants on Environment

    • Plants modify their environment by removing oxygen and releasing carbon dioxide (CO2).
    • Insects and birds interact with plants, feeding on them and contributing to the ecosystem dynamics.

    Animal Influence on Environment

    • Animals consume oxygen produced by plants and in turn, expel carbon dioxide (CO2), affecting air quality and ecosystem health.

    Climate and Biota

    • The survival of specific biota is heavily influenced by climate conditions, as only certain organisms can thrive in particular climates.

    Water's Role in Ecosystems

    • Water serves as a vital resource for plants and animals; it is essential for life and ecosystem formation.

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    Description

    Explore the essential concepts of biotic and abiotic factors in desert ecosystems through flashcards. Learn about the critical role of decomposers in cycling matter and energy. This quiz will help reinforce your understanding of key environmental science principles covered in Chapter 18, Sections 1-4.

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