Biodiversity

The video explores Earth's biodiversity, highlighting its genetic, species, and ecosystem diversity. It discusses the importance of biodiversity, patterns of distribution, and the threats posed by human activities leading to mass extinction. Biodiversity hotspots are identified as critical areas for conservation. The video emphasizes the need to protect biodiversity for environmental services, food supply, and potential medical resources.

What is the primary benefit of genetic diversity within a population?

• It increases the number of species.

• It ensures a stable climate.

• It provides more raw material for evolution.

• It reduces the need for conservation.

Which ecosystem is known for having high species diversity?

• Rainforest

• Desert

• Ocean floor

• Temperate forest

How many plant species are currently known to scientists?

• Around 300,000

• Around 1 million

• Around 5,500

• Around 10 million

What is a significant pattern observed in biodiversity?

• It decreases over time.

• It is constant across the globe.

• It is higher near the tropics.

• It is higher near the poles.

What is the current rate of species extinction estimated by some scientists?

• 200 species per day

• 10 species per day

• 50 species per day

• 100 species per day

What percentage of the world's surface do biodiversity hotspots cover?

• 1.4%

• 5%

• 10%

• 20%

Why are biodiversity hotspots crucial for conservation?

• They are the largest ecosystems.

• They cover most of the Earth's surface.

• They support 60% of the planet's biodiversity.

• They are unaffected by human activities.