The video tutorial covers habitats, food chains, food webs, and pyramids of numbers. It explains how organisms adapt to their habitats, the role of producers and consumers in ecosystems, and how energy is transferred and lost in food chains. The concept of pyramids of numbers is introduced, illustrating the relationship between different levels of a food chain.

What is a habitat?

• A kind of animal

• A weather condition

• A type of food

• A place where an organism lives

What adaptation helps a cactus survive in the desert?

• Ability to swim

• Large leaves

• Thick bark

• No leaves and spines

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NGSS.MS-LS2-1

Which organism is an example of a producer?

• Grass

• Deer

• Lion

• Wolf

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NGSS.MS-LS2-3

What do primary consumers eat?

• None

• Both plants and meat

• Plants

• Meat

Which animal is a secondary consumer?

• Cow

• Wolf

• Grasshopper

• Sheep

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NGSS.MS-LS2-3

Which of the following best describes a food web?

• None of the above

• Linear sequence of energy transfer

• Single chain of food consumption

• System with multiple energy paths

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NGSS.MS-LS2-3

Why do food chains rarely exceed five links?

• Plants produce limited energy

• Energy is abundant

• Energy is lost at each step

• Animals are not hungry

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NGSS.MS-LS2-3

What does the pyramid of numbers illustrate?

• Number of producers only

• Energy levels in each trophic level

• Number of organisms at each trophic level

• Number of habitats

What happens to energy as it moves up the food chain?

• Increases

• Decreases

• Remains constant

• Becomes solar energy

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Why might a food pyramid appear inverted?

• More secondary consumers than primary

• More primary consumers than producers

• A single producer supports many consumers

• All are correct

Tags

NGSS.MS-LS2-3