Ecosystems and Biodiversity

What is an ecosystem?

• A group of animals that are the same species.
• Soil, water, air and sunlight
• All the living and non living things that interact in an area.
• North America

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Which habitat exhibits the greatest biodiversity?

• A habitat with 15 different species with about 300 individuals each
• A habitat with 10 different species with about 75 individuals each
• A habitat with 4 different species with about 150 individuals each
• A habitat with only one species with about 2000 individual

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Currently sharks are on a rapid decline due to overfishing. If sharks go extinct will this affect the biodiversity of the ocean?

• No, sharks are not important.
• No, sharks will only affect the seal populations.
• Yes, it will disrupt the entire food chain in the ocean.
• Yes, but only a little.

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How can humans best help an endangered species avoid extinction?

• they can feed the animals
• they can put the animals in a zoo
• they can protect the animal’s habitat
• they can take the animal to new habitats

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Non-living factor that affects an ecosystem

• biotic factor
• abiotic factor
• food chain 
• biome

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What is the original source of almost all energy in most ecosystems?

• carbohydrates
• sunlight
• water
• carbon

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What is the term used to describe all living things in an ecosystem?

• Biotic Factors
• Abiotic Factors
• Environmental Factors
• Population

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Which organisms would be the energy for the hawk?

• rabbit, shrew, and snake

• rabbit, snake, and grasshopper

• shrew, snake, and insect eating bird

• grass, rabbit, and insect eating bird

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Something important is missing from this food web! The grass starts this food web. But the plant's energy comes from __________, the one picture that is missing from the food web.

• water

• the sun

• the air

• the soil

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Areas defined by their geographical location and ecological similarity are called?

• ecozones
• biotopes
• biomes
• biodomes

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