Human Impact on Biodiversity

Human Impact on Biodiversity

Standard: 6.LS4.1 Explain how changes in biodiversity would impact ecosystem stability and natural resources.

Objective: I can explain explain biodiversity. I can explain how human activity impact biodiversity in an ecosystem.

What is biodiversity?

Biodiversity — short for biological diversity — is the variety of all living things and their interactions. Biodiversity changes over time as extinction occurs and new species evolve. Scientists often speak of three levels of diversity: species, genetic, and ecosystem diversity.



Turn and Talk: In your own words, what is biodiversity?

Multiple Choice

What is biodiversity?

• Biodiversity is the variety of life forms on Earth.
• Biodiversity is the study of rocks and minerals.
• Biodiversity is the variety of life forms on Mars.
• Biodiversity is the process of photosynthesis in plants.

Why are millions of animals and plants at risk of extinction due to human activity?

Video: https://youtu.be/5tgNtIUOL4E

Damaging Biodiversity

Habitat Destruction is the loss of natural habitat. This may include clearing forests or filling in wetlands


Turn and Talk: What are humans doing to an habitat?

• Agriculture

• Urbanization

• Deforestation

• Overpopulation

• Pollution

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Human Impact on Biodiversity

Multiple Choice

The loss of natural habitat is called...

• habitat development

• pollution

• habitat destruction

• biodiversity

Multiple Choice

The breaking of habitats into smaller pieces is called?

• habitat polarization

• habitat deformation

• habitat fragmentation

• habitat corruption

Multiple Choice

Why is habitat fragmentation hazardous to animals?

• Animals may not thrive in their new habitat

• If coral reefs die, so will many fish species that depend on them

• Habitat fragmentation does not pose a threat to animals.

• Habitat fragmentation causes loss of habitat for many organisms

Multiple Choice

Habitat fragmentation occurs when…

• An ecosystem is able to recover, or adjust easily to change

• The temperature of ocean water causes algae to leave coral reefs.

• A large area of habitat is broken up into smaller isolated areas

• Smaller fragments of a habitat join to make a large habitat

Multiple Choice

What are the greatest problems facing plants, animals, and people?

• habitat destruction

• illegal hunting

• introducing new species that can cause problems

• all of the above

Multiple Choice

Why do the populations of invasive species grow so quickly?

• Invasive Species are native to an area.

• Invasive species have no predators.

• Invasive species are prey to many animals.

• Invasive species keep the ecosystems in equilibrium.

Multiple Choice

What makes a species invasive?

• Not having papers

• Moving to a new ecosystem and taking resources from natives

• Plants that take up too much space

• Species that can't adapt

Multiple Select

Climate change causes extreme weather conditions such as:

• Flooding

• Hurricanes

• Heatwaves

• Droughts

Multiple Choice

How does plastic effect sea life?

• Microplastics create dead zones in the oceans.

• Plastics provide habitats for marine life.

• Wildlife such as dolphins, seals and seabirds often eat plastic, mistaking it for food.

• Non of the above.

Multiple Choice

Process that moves sediments and rocks from one place to another.

• Deposition

• Weathering

• Erosion

• Pollution

Multiple Choice

How do humans increase erosion?

• building groynes

• protecting beach dunes

• removing plants and trees

Multiple Select

Pollution can cause harm to the ___________.

• water

• land

• air

Multiple Choice

Human impact on the environment is often more dramatic than the impact of most other living things because humans have a greater

• need for water

• need for food

• ability to adapt to change

• ability to alter the environment

Multiple Choice

Which of the following issues is the cause of the other environmental impacts caused by humans?

• pollution

• human population growth

• climate change

• habitat destruction

Multiple Choice

Belief that humans have caused the Earth to gradually warm up

• Global Warming

• Conserve

• Byproduct

• Earth's Fever

Multiple Choice

Adding harmful waste to water, air, or land

• smog

• renewable resources

• non-renewable resources

• pollution