Ecosystems Dynamics

What is the difference between biotic and abiotic?

• Biotic are non-living things
• Abiotic are living organisms
• Biotic is life,
  Abiotic is non-living
• Biotic is non-living, Abiotic is living

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What does biodiversity mean?

• Only one species in an area.
• The different amount of species in an area
• All abiotic life
• Nitrogen fixation

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Which option is abiotic?

• Plants
• Bacteria
• Water
• Fungi

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Which option is abiotic?

• Plants
• Rocks
• Animals
• Fungi

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Food provides animals with the materials and energy they need for growth, warmth, and motion. Plants get material for growth mostly from air and water, and obtain energy from sunlight.

Producers provide food to consumers because ―

• many animals prefer eating plants to eating meat
• plants can easily make food from soil and water
• animals cannot produce their own food
• plants are more abundant in ecosystems

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A drought has hit this grassland biome. How will this effect the rabbit population?

• The rabbits will increase in number.
• The rabbit population will stay the same.
• The rabbit population will decrease.
• The rabbit population will become extinct immediately.

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All living and nonliving things in an environment and the many ways they interact are called ______

• ecosystem
• community

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Brown trout consume (eat) more tadpoles when the fly larvae reduce in number (decrease).  This proves...

• The dependence of organisms and biodiversity in an ecosystem
• Diversity increases as organisms decrease
• Losing an animal is good for ecosystems
• Changes in ecosystems create new organisms

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In this tundra food web, if grasses were removed what would happen to the sustainability of the ecosystem?

• There would be an overpopulation of arctic hares and lemmings.
• Polar bears would move to a new ecosystem
• The ecosystem would collapse because it lost its main producer
• Wildflowers would die out from the ecosystem

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Which biome is more biodiverse?

• Desert
• Sand
• Tundra
• Rainforest

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