'Schoolnet' Week #24

 Which is the most important reason for maintaining clean water?

• Organisms cannot live and grow without water.

• Goods cannot be transported easily without water.

• Energy cannot be generated without water.

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What will cause water to become runoff rather than soak into the ground?

• there is a lot of pavement and asphalt

• there is a lot of sandy soil that allows water to drain well

• the land is pretty flat

How does the water in an estuary compare to the water in the open ocean?

• the estuary has less salt and more nutrients

• the estuary has more salt and fewer nutrients

• the estuary has the same amount of salt and fewer nutrients

 Which is an action people can take to protect the water supply?

• Continue to run water while brushing their teeth

• Turn off faucets while brushing teeth.

• Pour cooking oil down kitchen drains after cooking.

Which is the dominant physical feature of planet Earth?

• the oceans

• mountains

• lakes

• rivers

Which percentage represents the amount of freshwater on Earth?

• 3%

• 97%

• 30%

• 70%

Which is an example of parasitism?

• tadpole and frog

• human and tapeworm

• clownfish and anemone

• pilot fish and sharks

The white-tailed deer found in North Carolina are herbivores. What will most likely happen to the deer if there is a drought and most of the plant life dies?

• Deer population will not change.

• Deer population will increase due to a lack of food.

• Deer population will decrease due to a lack of food.

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NGSS.MS-LS2-1

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Which organism is necessary for 'fixing' nitrogen into a form usable by plants during the nitrogen cycle?

• bacteria

• plants

• animals

• fungi

How does an ecosystem benefit when leaves fall from a tree and decompose on the soil?

• Nutrients are released into the soil.

• Soil erosion increases.

• Fewer nutrients are available for animals

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