NGSS.MS-LS2-4

Field mice are the primary food source for horned owls in an area. Due to a drought, many field mice left the area. Which result would this drought most likely have on the horned owls?

• The horned owl population will consume more field mice.
• Horned owls will follow the field mice to a different area.
• The horned owl population will increase in the area.
• Horned owls will change to a plant-based diet.

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NGSS.MS-LS2-4

When an ecosystem is affected by loss of shelter, what happens to the populations in that ecosystem?

• They can decrease or die out
• They are usually not affected
• They can readily adapt to the changes
• The populations increase

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NGSS.MS-LS2-4

If additional snakes are introduced into this ecosystem, there will most likely be an immediate decrease in the _________.  

• hawk population
• rabbit population
• wildflower population
• grass population

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NGSS.MS-LS2-4

Why couldn't the Swomee-Swans sing after the trees began to be cut down?

• They ate too much.

• They were tired.

• They had smog in their throats.

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NGSS.MS-LS2-4

Tornadoes are catastrophic events that create change in ecosystems in which of the following ways?

• Heavy flooding increases areas where trees can grow.

• High winds damage areas of important plant life.

• Wildfires started by lightning reduce carbon dioxide.

• Saltwater kills many ground-dwelling animals.

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NGSS.MS-LS2-4

What is coral bleaching?

• When the sun heats up the water and the coral cannot withstand the high temperatures

• When people throw bleach into the ocean

• When a type of fish eats away at the coral, making it looked bleached.

• When the coral naturally dies,

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NGSS.MS-LS2-4

If a lake has excess levels of phosphates and nitrates in its water, what will most likely result?

• The temperature of the lake water will decrease.

• The turbidity levels of the lake will decrease.

• The dissolved-oxygen levels in the lake will increase.

• The growth of algae in the lake will increase.

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NGSS.MS-LS2-4

Corals die because of ________________

• boat anchors that destroy or break the corals.

• the gradual warming of the ocean's temperature

• irresponsible divers that kick the corals.

• All of the above

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NGSS.MS-LS2-4

Which of the following is the best definition for Short Term Environmental changes?

• Short-term environmental changes tend to not affect the environment and the organisms living in it since it happens rather quickly.

• Short-term environmental changes do not have a significant effect on the environment.

• Short-term environmental changes, like droughts, floods, and fires do not give populations time to adapt to the change and force them to move or become extinct. The changes happen rather quickly and there is no time for adaptations to occur which can lead to massive die-off.

• Short-term environmental changes, like pollution, deforestation, and ice age give populations time to adapt to the change and force them to move or become extinct.

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NGSS.MS-LS2-4

How do oil spills affect the environment?

• They do not affect the environment.

• They have a minimal impact on the environment.

• They pollute the environment and reduce populations of organisms.

• The pollute the environment but increase populations of organisms.

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NGSS.MS-LS2-4