Nutrient Cycle Flashcard

Front

What is the nitrogen cycle?

Back

The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms, including atmospheric nitrogen, ammonia, nitrites, nitrates, and organic nitrogen, through biological and physical processes.

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What role do bacteria play in the nitrogen cycle?

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Bacteria are essential in the nitrogen cycle as they convert atmospheric nitrogen into ammonia (nitrogen fixation) and further process it into nitrites and nitrates, which can be used by plants.

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What is the primary form of carbon found in the atmosphere?

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The primary form of carbon in the atmosphere is carbon dioxide (CO2).

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What is evaporation, and how does it relate to the water cycle?

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Evaporation is the process by which water changes from a liquid to a gas (water vapor) due to heat. It is a key component of the water cycle, contributing to the movement of water from the Earth's surface to the atmosphere.

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How do plants absorb phosphorus?

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Plants absorb phosphorus from the soil in the form of phosphate ions (PO4^3-), which are essential for their growth and energy transfer.

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What is sedimentation?

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Sedimentation is the process by which particles settle out of a fluid, leading to the accumulation of sediments, which can eventually form sedimentary rocks over time.

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What is the importance of the nutrient cycle in ecosystems?

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Nutrient cycles are crucial for ecosystems as they recycle essential elements like nitrogen, carbon, and phosphorus, supporting plant growth and maintaining ecological balance.

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What is the process of photosynthesis, and how does it relate to the carbon cycle?

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Photosynthesis is the process by which green plants use sunlight to convert carbon dioxide and water into glucose and oxygen. It plays a vital role in the carbon cycle by removing CO2 from the atmosphere.

Front

What are the main components of the water cycle?

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The main components of the water cycle include evaporation, condensation, precipitation, infiltration, and runoff.

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How does human activity impact the nitrogen cycle?

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Human activities, such as the use of fertilizers and fossil fuel combustion, can disrupt the nitrogen cycle by increasing nitrogen levels in the environment, leading to issues like eutrophication.