Model 1 - The Water Cycle: A visual representation of how water moves through the environment, highlighting key processes and storage areas.

You’ve uploaded a worksheet titled “Nutrient Cycles”, focusing on Model 1 – The Water Cycle. Below is a clear, step-by-step explanation and solution to the questions based on the diagram and text provided.

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✔ Question 1:

> Model 1 illustrates how nature recycles what natural resource?

Answer: water

🔹 Explanation:
The entire diagram — labeled “Model 1 – The Water Cycle” — shows processes like evaporation, transpiration, precipitation, runoff, percolation, and groundwater flow. All these are part of the hydrologic (water) cycle, which describes how water moves through the atmosphere, land, and oceans. The purpose is to show that water is continuously recycled in nature — it’s not lost, but transformed and moved between different reservoirs.

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✔ Question 2:

> Model 1 illustrates four major areas of water storage on Earth. Complete the list of these storage areas below.
> Atmosphere, surface water, _______________, and _______________.

Answer:
- groundwater
- living things

🔹 Explanation:
Looking at the diagram:
- Atmosphere → shown as clouds and vapor transport.
- Surface water → shown as lakes, rivers, and ocean.
- Groundwater → labeled as “Groundwater Flow (stored in Aquifer)” beneath the land.
- Living things → shown by trees undergoing transpiration — plants store and release water, so they are part of the water storage system.

These four represent the major reservoirs where water is stored during its cycle.

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✔ Question 3:

> Where is groundwater stored?

Answer: in aquifers (underground water reservoirs)

🔹 Explanation:
The diagram labels “Groundwater Flow (stored in Aquifer)” with arrows showing water moving underground. An aquifer is a layer of permeable rock, sand, or gravel that holds groundwater. It acts like a natural underground sponge or reservoir. Groundwater is recharged by percolation (water seeping down from the surface) and can be tapped via wells.

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## 🌍 Bonus Context (from the intro text):

The worksheet begins by explaining why nutrient cycles matter:
> *“Atoms are recycled, not gained nor lost.”*
This is a core principle of ecology and chemistry — matter is conserved and reused. Water, carbon, nitrogen, etc., all cycle through ecosystems. In the case of water, it evaporates, condenses, precipitates, and infiltrates — over and over — sustaining life.

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## ✔ Final Answers Summary:

1. water
2. groundwater, living things
3. in aquifers (underground water reservoirs)

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Let me know if you’d like help with other models (like carbon or nitrogen cycles) from this worksheet!