Science Review 3rd Nine Weeks

Many desert animals depend on the prickly pear cactus. What role does the prickly pear cactus play in a desert food web? (5.9B)

• It obtains energy from producers.

• It returns nutrients to the soil.

• It preys upon other organisms.

• It provides energy to consumers.

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The food web shown is made up of organisms that live in a forest. Which change would most likely occur if all the producers in this ecosystem were removed? (5.9B)

• The mice would become the new producers.

• All the animals would either die or move away.

• The number of mice would increase.

• All the animal populations would increase.

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A freshwater ecosystem has various food webs. One of these food webs is shown here. Which organisms transfer the most energy within the food web? (5.9B)

• Bass, because they are predators in this web

• Copepods, because they support two chains in this web

• Crayfish, because they are at the bottom of this web

• Algae, because they are the producers in this web

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The diets of several types of prairie animals are described in the table. Which of the following prairie food chains is in the correct order? (5.9B)

• 
• 
• 
• 

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A partial wetland food web is shown. Which statement correctly describes the transfer of energy in a food chain in this wetland? (5.9B)

• Energy is transferred from hawks to shrews to grasshoppers to marsh grasses.

• Energy is transferred from marsh grasses to crickets to hawks to frogs.

• Energy is transferred from grasshoppers to crickets to frogs to hawks.

• Energy is transferred from cattails to crickets to shrews to hawks.

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Some beetles break down the remains of dead animals. Some mushrooms break down the remains of dead trees. How do these actions most benefit plants? (5.9A)

• By returning nutrients to the soil

• By releasing oxygen into the air

• By making space for new animals

• By decreasing the population of herbivores

Which of the following is a description of weather data? 

• The Sahara desert gets very little rainfall.
• The average daytime high in the Amazon is 25°C.
• Temperatures in the Arctic are usually below freezing. 
• It rained two inches in Miami, Florida on May 5th. 

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What is the difference between weather and climate?

• Weather can be predicted, climate cannot
• Weather can change, climate cannot
• Weather is short-term, climate is long-term
• Weather is long-term, climate is short-term

The nesting habits of four types of birds are above. If all the dead branches and dying trees in a wooded area are removed, which bird's nesting habit would be most affected?

• Baltimore Oriole

• Barn Swallow

• Downy Woodpecker

• Belted kingfisher

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Plants can survive in a clear, closed container without animals. Animals cannot survive in a closed container without plants. Why can’t animals survive in a closed container without plants?

• Plants and animals need water to survive

• Plants produce oxygen, which animals need

• Plants take in and give off water; animals only take in water

• Plants are stationary; most animals roam freely

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