Ecology and Environment

If a forest fire occurs, what will happen to the carbon in the forest?

• It will go into the soil

• It will go into the atmosphere

• It will runoff into nearby streams and rivers

• It will be destroyed

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Humans burn fossil fuels and wood, releasing carbon dioxide into the atmosphere. This carbon dioxide is then absorbed by trees for photosynthesis. These processes are contributory to which chemical cycle?

• The carbon cycle

• The water cycle

• The nitrogen cycle

• The phosphorous cycle

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Which of the following is an example of human impact on the carbon cycle?

• The increased production of methane gases from cattle farms

• The burning of fossil fuels

• The cutting down of trees for lumber

• Driving automobiles

• All of the above

Which of the following is the best conclusion that can be made from this graph?

• atmospheric carbon dioxide levels have been decreasing since 1960

• Hawaii has a lot of carbon dioxide

• humans have been working hard to decrease carbon dioxide levels

• atmospheric carbon dioxide levels have increased steadily since 1960

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What does a food web represent?

• All connections of energy flow throughout all organisms in a ecosystem.

• The specific ways that mutualism is carried out.

• A single pathway or energy flow between organisms. 

• How carnivores get their food. 

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Which organism recieves the least amount of energy from the producer?

• Owl

• Grasshopper

• Lilypad

• Mouse

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A flood that covers a meadow and drowns animals and a late frost that kills young plants are examples of how ____________ can affect the size of a population.

• space

• food

• weather

• growth

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Which option is abiotic?

• Plants

• Bacteria

• Water

• Fungi

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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Examples of a producer

• frog

• algae

• worm

• mouse

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