3.12C Environment Changes

How might a flood impact animals that do not live in the water?

• Water pollution decreases, making the environment better.
• They either move to a new location or perish.
• With drier land, animals have less water available.
• Water in streams and creeks moves slower, bringing them more food.

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While wildfires are a source of destruction, what is one positive effect of wildfires on an ecosystem?

• Droughts often occur with wildfires
• Allows for more plant growth by clearing space
• Animals lack food and water
• Some animals perish

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Which TWO statements describe organisms thriving after an environmental change?

Choose TWO answers.

• Drought leads to wildfires and lack of water for plants and animals.
• New plants grow in the rich soil of an area that was recently flooded.
• Flooding causes animals to perish.
• A hurricane brings strong winds that knock over trees.
• Some plants release seeds after a fire melts the seed’s hard coating.

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The images below show an area before and after a flood.

What is an effect of this flood?

• Animals may need to move to a new home.

• The sun will shine less.

• Trees will grow taller right away.

• Rocks will turn into sand overnight.

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a large amount of water that covers dry land

• Flood

• Drought

• Perish

• Thrive

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long periods of time without enough rain

• Flood

• Drought

• Perish

• Thrive

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What does Perish mean?

• long periods of time without enough rain

• to live and grow in a healthy way

• to die

• a group of the same kind of organism

Which of the following are POSITIVE environmental changes? Choose all that apply. 

• Flood

• Planting trees

• Wildfire

• Litter clean-up

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Which of the following are NEGATIVE environmental changes? Choose all that apply. 

• Flood

• Planting trees

• Wildfire

• Litter clean-up

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Wildfires can be a major source of destruction to the environment.

Which of the following is one effect of wildfires on the environment?

• Provide rivers with a faster flow of water

• Can clear space for new plant growth

• Leads to droughts in some areas

• Makes new habitats for species that live in trees

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