Understanding Biodiversity

What does biodiversity refer to in an environment?

• The climate variations

• The variety of human life

• The variety of life in a specific area

• The number of plants only

What are the two levels of biodiversity?

• Oceanic and terrestrial

• Genetic and species

• North and South

• Young and old

What is genetic biodiversity?

• The number of species in an ecosystem

• The age differences within a species

• The size of an ecosystem

• The variations within a single species

What is an ecosystem?

• A collection of plants only

• A specific climate zone

• An area used for agriculture

• A community of living organisms and their physical environment

Why is biodiversity crucial for ecosystems?

• It keeps the climate constant

• It maintains a balance within the environment

• It allows for human activities to expand

• It ensures all animals are predators

What happens in an ecosystem with low biodiversity when a predator is removed?

• The prey population decreases

• Another predator replaces it immediately

• The prey population becomes overpopulated

• The ecosystem becomes more diverse

How does biodiversity benefit humans?

• Increases economic activities

• Supplies food, shelter, and medicine

• Offers only shelter

• Provides entertainment

What percentage of the Earth's surface do rainforests cover?

• Exactly 25%

• About 10%

• Less than 2%

• Over 50%

What is not a direct benefit of biodiversity to humans?

• Food

• Shelter

• Entertainment

• Medicine

Why are rainforests important for biodiversity?

• They provide the most oxygen

• They cover over 50% of the Earth

• They are home to more than 50% of the planet's plant and animal life

• They are the only ecosystem on Earth