Human Impact on Ecosystems
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Questions and Answers

What is a major consequence of deforestation?

  • Decreased biodiversity (correct)
  • Increase in water quality
  • Expansion of urban areas
  • Improvement of soil health
  • How does overpopulation impact ecosystems?

  • It reduces the consumption of resources
  • It results in more clear-cutting of forests (correct)
  • It encourages the growth of forests
  • It leads to increased habitat space availability
  • Which of the following is NOT a consequence of plastic production and chemicals?

  • Disruption of cell biology
  • Presence of waste plastic in oceans
  • Improvement of ocean health (correct)
  • General pollution of land and water systems
  • What effect does the emission of greenhouse gases have on the Earth?

    <p>Causes climate change (B)</p> Signup and view all the answers

    Which human activity contributes to the destruction of coral reefs?

    <p>Increased ocean acidity (B)</p> Signup and view all the answers

    Which activity is exacerbated by intensive agriculture concerning freshwater resources?

    <p>Draining of rivers (B)</p> Signup and view all the answers

    What is a consequence of overhunting?

    <p>Disruption of food chains (C)</p> Signup and view all the answers

    What problem is caused by the introduction of invasive species?

    <p>Competes with native species (D)</p> Signup and view all the answers

    What term describes an ecosystem that is well balanced and sustainable over time?

    <p>Dynamic equilibrium (D)</p> Signup and view all the answers

    Which of the following is a practice aimed at reducing reliance on pesticides?

    <p>Introducing predator insects (C)</p> Signup and view all the answers

    What agricultural practice helps increase soil fertility?

    <p>Cover cropping (B)</p> Signup and view all the answers

    Which practice allows for the growth of crops without soil?

    <p>Hydroponics (D)</p> Signup and view all the answers

    What concept emphasizes that all life has its role and function in the ecosystem?

    <p>Interconnectedness (C)</p> Signup and view all the answers

    What is a key focus of traditional knowledge regarding sustainability?

    <p>Respecting the cycles of nature (D)</p> Signup and view all the answers

    What is the role of agroforestry in sustainable agriculture?

    <p>Stabilize growing conditions and reduce nutrient runoff (B)</p> Signup and view all the answers

    Which practice involves using composted materials to improve soil?

    <p>Soil enrichment (D)</p> Signup and view all the answers

    Flashcards

    Agriculture's Impact on Ecosystems

    The practice of clearing land for farming, replacing forests with fields. This leads to soil degradation, water pollution, and biodiversity loss.

    Deforestation

    The removal of trees on a large scale, causing habitat loss, climate change, and displacement of indigenous communities.

    Overpopulation and Overconsumption

    Excessively large human populations put pressure on resources, leading to increased consumption, deforestation, and habitat destruction.

    Plastic and Chemicals

    Pollution from plastic waste and chemical runoff disrupts ecosystems, harming wildlife and altering food chains.

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    Greenhouse Gas Emissions

    The release of greenhouse gases like carbon dioxide traps heat in the atmosphere, causing global warming and disrupting ecosystems.

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    Coral Reef Destruction

    Coral reefs, vital for fish habitats, are damaged by pollution, climate change, overfishing, and ocean acidification.

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    Water Over-Extraction

    Over-extraction of water for agriculture and other purposes leads to depletion of freshwater sources, affecting ecosystems and biodiversity.

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    Overexploitation of Resources

    Overfishing, overhunting, and mining deplete natural resources, disrupting food chains and impacting overall ecosystem balance.

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    Dynamic Equilibrium

    A state where an ecosystem is balanced and can sustain itself over a long period.

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    Sustainable Agriculture Practices

    Practices used in farming that aim to maintain the health and productivity of ecosystems.

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    Pest Management

    Using natural methods to control pests, like introducing predators or planting multiple crops together.

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    Crop Rotation

    Rotating different crops on the same land, improving soil health and preventing pest buildup.

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    Hydroponics

    Growing plants without soil, using water and nutrients.

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    Aquaponics

    A type of hydroponics where fish waste is used as fertilizer for plants.

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    Urban Agriculture

    Growing food close to home, often in urban areas, reducing transportation needs and promoting local food systems.

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    Agroforestry

    Integrating trees and shrubs with crops or grazing land, improving soil health and resilience.

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    Study Notes

    Human Activities Affecting Ecosystems

    • Agriculture: Over 40% of Earth's surface is now used for agriculture, displacing forests and impacting soil, land, and water systems. Fertilizers used in farming are detrimental.
    • Deforestation: Significant tree loss since the industrial revolution, contributing to climate change due to reduced CO2 absorption. Displaces indigenous populations.
    • Overpopulation and Overconsumption: High human population demands significant resources, leading to more deforestation and resource depletion.
    • Plastic Production and Chemicals: Widespread plastic waste and chemical pollutants harm various organisms, disrupting cell biology.
    • Greenhouse Gas Emissions: Increased carbon dioxide and other greenhouse gases cause global warming and extreme weather events, impacting ecosystems.
    • Reef Destruction: Water pollution, climate change, overfishing, and ocean acidification damage coral reefs, crucial for fish growth and reproduction.
    • Freshwater Aquifer Depletion: Intensive agriculture depletes rivers and crucial aquifers, negatively affecting diverse plant and animal life.
    • Overhunting and Overexploitation: Overuse of natural resources such as overfishing and mining severely impacts ecosystems, disrupting food chains.
    • Invasive Species: Introduced species often lack natural predators, outcompete native species, and disrupt ecosystem balance.

    Sustainable Practices

    • Agricultural practices: Reduce pesticide reliance by using natural pest control, crop rotation, hydroponics, and agroforestry; improve water management.
    • Community Approaches: Indigenous knowledge and values are very significant for sustainability; laws of nature, interconnectedness, and respect for all living things are important for successful practices.

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    Description

    This quiz explores the various human activities that significantly affect ecosystems, including agriculture, deforestation, and plastic pollution. Understand the consequences of overpopulation and greenhouse gas emissions, as well as their impacts on biodiversity and natural resources. Engage with questions to assess your knowledge on these pressing environmental issues.

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