Biology EOC RC 5

A pond ecosystem is shown in the diagram below. Which statement describes an interaction that helps maintain the dynamic equilibrium of this ecosystem?
Which statement describes an interaction that helps maintain the dynamic equilibrium of this ecosystem?

• The frogs make energy available to this ecosystem through the process of photosynthesis.
• The algae directly provide food for both the rotifers and the catfish.
• The green-backed heron provides energy for the mosquito larvae.
• The catfish population helps control the populations of water boatman and waterfleas.

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NGSS.MS-LS2-3

NGSS.MS-LS2-2

According to the food web, which of these supply energy for all the other organisms?     

• snakes
• insects
• grasses
• cougars

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NGSS.MS-LS2-3

Deforestation by burning has been described as a "double whammy" to the environment, meaning it has 2 negative impacts. Why is this description accurate? 

• Forest burning releases CO₂ while decreasing oxygen, which disrupts cycles
• Deforestation reduces the amount of oxygen in the atmosphere, which depletes the ozone layer
• Forest clearing is often followed by land development, which often leads to increased noise pollution
• Deforestation increases the number of plant and animal species by destroying habitat

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NGSS.HS-ESS2-2

NGSS.HS-LS2-5

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The number of species within a specific habitat.

• Conservation
• Sustainable development
• Biodiversity
• Preservation

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NGSS.MS-LS2-4

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What is happening at 1?

• respiration: releasing CO2
• decomposing CO2 in the soil
• photosynthesis: absorbing CO2
• turning CO2 from the atmosphere into organic molecules

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

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

• Owl
• Grasshopper
• Lilypad
• Mouse

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NGSS.MS-LS2-3

The recycling of matter in ecosystems requires the breakdown of dead organic matter. This is accomplished by

• decomposers
• primary consumers
• secondary consumers
• primary producers

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NGSS.MS-LS2-3

In the food chain, how much energy will make it to the trophic level of the sharks if the producers have 100,000 calories?

• 10 calories
• 1 calorie
• 100 calories
• 1,000 calories

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NGSS.MS-LS2-3

How does the growth of hardwood trees affect the organisms in an ecosystem?

• grasses become fewer because the trees take up the light
• Trees provide shelter for a variety of mammals, birds, insects, etc.
• In autumn, the falling leaves provide nutrients for decomposers
• All of the above

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NGSS.MS-LS2-3

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NGSS.MS-LS2-1

Why does secondary succession have more species diversity than primary succession?

• There is no species diversity.
• Secondary succession has more species diversity due to the lack of soil.
• Secondary succession has more species diversity due to the microorganisms that survived in the soil.
• Primary succession ALWAYS has more species diversity.

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NGSS.HS-LS4-5