1.6.3 Human Impact

• Deforestation is an example of a land use change.land use
• Invasive species can outcompete and displace native organisms.organisms
• Human impact on ecosystems includes activities such as deforestation, pollution, overfishing, and climate change
• Human activities can lead to biodiversity loss and disruption of natural cycles.


  True
• Order the following human activities based on their impact on the carbon cycle:

  1️⃣ Deforestation

  2️⃣ Fossil Fuel Combustion

  3️⃣ Industrial Processes
• Human activities such as fertilizer use disrupt the nitrogen cycle.


  True
• Biodiversity is crucial for ecosystem stability and human well-being.


  True
• Deforestation reduces the number of carbon-absorbing trees, leading to a buildup of atmospheric carbon dioxide
• Greenhouse gas emissions contribute to climate change.

  True
• Steps in the nitrogen cycle

  1️⃣ Nitrogen Fixation

  2️⃣ Nitrification

  3️⃣ Assimilation

  4️⃣ Ammonification

  5️⃣ Denitrification
• Human impact on ecosystems refers to the effects of human activities on living organisms and their physical surroundings.


  True
• Match the source of impact with its example:

  Land Use Changes ↔️ Deforestation

  Pollution ↔️ Industrial waste

  Overexploitation ↔️ Overfishing
• Increased levels of greenhouse gases trap more heat in the Earth's atmosphere.


  True
• Match the human activity with its impact on the nitrogen cycle:

  Fertilizer Use ↔️ Eutrophication

  Burning Fossil Fuels ↔️ Acid Rain

  Industrial Processes ↔️ Nitrogen Waste
• Strategies for sustainable ecosystem management include conservation, pollution reduction, sustainable forestry, and promoting ecotourism
• What is the definition of human impact on ecosystems?

  Effects of human activities
• What does overfishing lead to in marine ecosystems?

  Decline in fish populations
• Habitat loss reduces biodiversity in ecosystems.


  True
• The main sources of human impact on ecosystems include land use changes, pollution, overexploitation, and invasive species
• The carbon cycle is a fundamental process in ecosystems that regulates the planet's climate
• The nitrogen cycle begins with nitrogen fixation, where nitrogen gas is converted into ammonia
• Key threats to biodiversity include habitat loss, climate change, pollution, overexploitation, and invasive species
• Conservation of natural habitats maintains ecosystem services and preserves biodiversity.


  True