The video explains how matter cycles through ecosystems, focusing on the carbon, oxygen, nitrogen, and water cycles. It highlights the conservation of matter, showing how these elements move between the atmosphere, earth, and organisms. The carbon cycle involves photosynthesis and fossil fuel combustion, while the oxygen cycle describes oxygen's movement between the atmosphere and organisms. The nitrogen cycle details nitrogen's journey through the atmosphere and living beings, and the water cycle covers processes like condensation and evaporation. The video concludes with a call to subscribe for more educational content.

What is the principle called that states matter is not created or destroyed as it cycles through an ecosystem?

• Cycle of Perpetual Motion

• Law of Conservation of Matter

• Law of Conservation of Energy

• Principle of Environmental Stability

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Which process uses carbon dioxide from the atmosphere to produce carbohydrates?

• Photosynthesis

• Decomposition

• Respiration

• Condensation

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What role do plants play in the carbon cycle?

• They convert carbon to oxygen

• They release carbon dioxide through respiration

• They absorb carbon from the soil

• They store carbon during photosynthesis

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What happens to carbon in dead and decaying matter?

• It forms new organisms

• It is converted into nitrogen

• It is released into the atmosphere

• It is permanently trapped

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How do oxygen atoms return to the atmosphere in the oxygen cycle?

• Via photosynthesis

• Through burning fossil fuels

• Through respiration and decomposition

• By precipitation

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What is the primary way that oxygen is cycled back to the atmosphere from organisms?

• Via water runoff

• Through fossil fuel combustion

• Through respiration

• By solar radiation

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What is a key component of the nitrogen cycle?

• The conversion of nitrogen to water

• The release of nitrogen into space

• The movement of nitrogen through animals

• The trapping of nitrogen in the soil

In which form is nitrogen utilized by organisms?

• Nitric acid

• Ammonia

• Nitrate

• Atmospheric nitrogen

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Which process is NOT part of the water cycle?

• Photosynthesis

• Sublimation

• Condensation

• Transpiration

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Which cycle involves the transition of water through condensation, precipitation, and evaporation?

• Nitrogen cycle

• Carbon cycle

• Oxygen cycle

• Water cycle

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