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Biology Asked by a SnapAndSolve user · about 18 hours ago

Multiple choice - Which process transfers carbon from the atmosphere into plants?

1. Multiple choice - Which process transfers carbon from the atmosphere into plants? A. Combustion B. Photosynthesis C. Respiration D. Decomposition
2. Short response - Explain why the phosphorus cycle differs from the carbon and water cycles in its movement through the atmosphere.
3. CER (Claim–Evidence–Reasoning)
Prompt- A community notices that a lake near agricultural fields experiences frequent algal blooms after heavy rainfall.
Claim: Identify the most likely cause of the algal blooms.
Evidence: State two observations or scientific facts that support your claim.
Reasoning: Explain how nutrient runoff can lead to lower dissolved oxygen and harm aquatic organisms.
Claim-
Evidence-
Reasoning-

Answer

  1. Answer: B. Photosynthesis

  2. Answer: The phosphorus cycle differs from the carbon and water cycles because it does not include a gaseous phase and does not move through the atmosphere. Phosphorus is typically cycled through soil, water, and living organisms.

  3. Claim: The most likely cause of the algal blooms is nutrient runoff from agricultural fields.

    Evidence:

    1. Heavy rainfall increases the runoff of fertilizers containing phosphorus and nitrogen into the lake.
    2. Algal blooms are often associated with high nutrient levels in water bodies.

    Reasoning: Nutrient runoff increases the concentration of nutrients like nitrogen and phosphorus in the water, promoting excessive algal growth. As algae die and decompose, they consume oxygen, leading to lower dissolved oxygen levels, which can harm aquatic organisms.

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