Biodiversity and Ecosystem Dynamics

The video discusses biodiversity, its importance, and the threats it faces, including climate change, habitat loss, pollution, invasive species, and over-exploitation. It emphasizes the need for conservation efforts to protect ecosystems and maintain species diversity.

What does biodiversity encompass?

• Only animal species

• Variety of living organisms including plants, bacteria, animals, and humans

• Only microorganisms

• Only plant species

How does biodiversity support ecosystems?

• By reducing the number of predators

• By increasing the number of species

• By supplying oxygen, clean air, and water, and aiding in pollination and pest control

• By providing food for humans

What is a major effect of climate change on biodiversity?

• Decreased temperatures

• Stable sea levels

• Increased rainfall

• Changes in population distribution and ecosystem levels

What are some causes of habitat loss?

• Increased rainfall

• Overpopulation of species

• Lack of sunlight

• Natural calamities and anthropogenic activities

What happens to organisms during habitat degradation?

• They are displaced and forced to relocate

• They thrive and multiply

• They become more diverse

• They remain unaffected

How does pollution threaten biodiversity?

• By increasing species diversity

• By altering nutrient cycles of elements like nitrogen and phosphorus

• By cleaning the environment

• By providing nutrients

What is a significant threat posed by invasive species?

• They can change entire habitats and dominate areas

• They are unable to adapt

• They help native species thrive

• They improve the habitat

What are examples of over-exploitation?

• Planting more trees

• Increasing biodiversity

• Over-harvesting, overfishing, and over-hunting

• Reducing pollution

What can individuals do to help conserve biodiversity?

• Increase knowledge and support conservation policies

• Pollute more

• Ignore environmental issues

• Hunt more species

Why is it important to prevent species from becoming at risk?

• To reduce biodiversity

• To increase the number of endangered species

• To promote invasive species

• To ensure ecosystem stability and prevent extinction