6.6.3 Human impact on ecosystems

• What does 'human impact' on ecosystems refer to?

  Human actions affecting ecosystems
• Pollution includes the release of chemicals, waste, and greenhouse gases into the environment.


  True
• Order the sequence of processes that can result from human impact on ecosystems

  1️⃣ Disruption of ecosystem balance

  2️⃣ Loss of biodiversity

  3️⃣ Ecosystem degradation
• Which resource extraction activity leads to deforestation?

  Mining
• Deforestation contributes to climate change by releasing stored carbon dioxide into the atmosphere.


  True
• Match the cause of deforestation with its description:

  Clearing land for agriculture ↔️ Forests are cleared to create farmland

  Logging and timber harvesting ↔️ Trees are cut down for wood products

  Mining and resource extraction ↔️ Forests are cleared to access minerals

  Urban expansion ↔️ Forests are cleared for cities and towns
• Deforestation leads to the loss of biodiversity
• Order the consequences of deforestation as they relate to ecosystems:

  1️⃣ Habitat loss

  2️⃣ Loss of biodiversity

  3️⃣ Disruption of water cycles

  4️⃣ Increased greenhouse gas emissions
• Match the type of pollution with its source:

  Air pollution ↔️ Fossil fuel emissions

  Soil pollution ↔️ Pesticides and industrial waste

  Noise pollution ↔️ Transportation and machinery

  Light pollution ↔️ Excessive artificial lighting
• What are the main human activities that contribute to climate change?

  Greenhouse gas emissions
• Greenhouse gas emissions can lead to ocean acidification
• What is resource depletion caused by?

  Overuse and exhaustion
• Match the environmental principle with its definition:

  Resource depletion ↔️ Unsustainable use of resources

  Sustainability ↔️ Meeting current needs without compromise
• Sustainable practices include recycling and using renewable energy.


  True
• Resource depletion refers to the overuse and exhaustion of natural resources at a rate faster than they can be replenished
• What are the causes of resource depletion?

  Overconsumption, inefficient use
• What is meant by human impact on ecosystems?

  Effects of human actions on nature
• How does climate change affect ecosystems?

  Alters temperatures and weather patterns
• What are the consequences of deforestation?

  Loss of biodiversity, soil degradation
• What is the effect of water pollution on ecosystems?

  Water-borne diseases, habitat degradation
• Greenhouse gas emissions can lead to ocean acidification.


  True
• How does sustainability differ from resource depletion?

  Preserves resources for future generations
• The introduction of cane toads in Australia led to the decline of native predators.


  True
• Education is a strategy for mitigating human impact by raising public awareness
• Habitat destruction involves clearing land for agriculture, urbanization, and resource extraction
• What is overexploitation in the context of human impact on ecosystems?

  Unsustainable resource harvesting
• Deforestation is primarily caused by urbanization and urban expansion.

  False
• Deforestation leads to a loss of biodiversity because it destroys the habitats of many plant and animal species
• What is deforestation often caused by?

  Agriculture, urbanization, resource extraction
• Deforestation has no severe consequences.

  False
• What can deforestation lead to in terms of soil quality?

  Soil degradation
• Water pollution can be caused by agricultural runoff.


  True
• Pollution can harm wildlife by disrupting their natural habitats
• Climate change has no effect on food chains.

  False
• Sustainability aims to preserve natural resources
• What is the principle of sustainability?

  Meeting current needs without compromise
• Sustainable practices aim to minimize environmental impact.


  True
• The consequences of resource depletion include scarcity, environmental degradation, and ecosystem disruption
• Invasive species can disrupt local ecosystems.

  True
• Deforestation is caused by clearing land, logging, mining, and urban expansion