Environmental Indicators and Pollution Effects

The video tutorial reviews biodiversity monitoring, emphasizing the importance of tracking species to prevent losses. It introduces indicator species, organisms used to measure environmental quality, and provides examples like canaries in mines. The tutorial covers air pollution, highlighting lichens as indicators, and explains water pollution, detailing how different species indicate pollution levels. By the end, viewers should understand indicator species and how they help monitor air and water pollution.

What is the primary purpose of monitoring biodiversity?

• To promote urban development

• To increase the number of species

• To track and assess the health of ecosystems

• To eliminate invasive species

Why were canaries used in mines historically?

• To entertain miners with their singing

• To control insect populations

• To provide companionship to miners

• To detect the presence of poisonous gases

What is a major cause of air pollution discussed in the video?

• Excessive noise

• Sulphur dioxide from fossil fuels

• Deforestation

• Plastic waste

How do lichens indicate air quality?

• By changing color in polluted areas

• By their presence or absence in certain areas

• By emitting a strong odor

• By growing rapidly in polluted areas

Which lichen type is found in clean air areas?

• Lichens that grow in polluted areas

• Lichens with root systems

• Delicate-looking lichens

• Crusty, hard-looking lichens

What happens to dissolved oxygen levels as water pollution increases?

• They decrease

• They remain constant

• They increase

• They fluctuate randomly

Which indicator species is found in unpolluted water?

• Freshwater shrimp

• Sludge worm

• Water louse

• Mayfly larvae

What does the presence of sludge worms in water indicate?

• The water is highly polluted

• The water is slightly polluted

• The water is clean

• The water is free of any pollution

Which species is found in low levels of water pollution?

• Sludge worm

• Water louse

• Freshwater shrimp

• Mayfly larvae

What is the role of indicator species in environmental monitoring?

• To promote species extinction

• To measure environmental quality

• To increase biodiversity

• To reduce pollution