Think about an Earthship's water system. Which of these steps happens last? HINT A. Water is used for drinking and washing. B. Water is used to flush toilets. C. Water is collected in storage tanks.

## Step 1<br />The question is about the sequence of events in an Earthship's water system. The Earthship is a type of sustainable habitat that uses renewable resources. The water system in an Earthship involves several steps, which include collecting water, using it for various purposes, and then reusing or recycling it.<br /><br />## Step 2<br />The first step in the water system is the collection of water. This is done by collecting rainwater or using other sources of water. This water is then stored in tanks for later use.<br /><br />## Step 3<br />The next step is the use of water for drinking and washing. This is the primary use of the collected water. The water is used for personal hygiene and drinking.<br /><br />## Step 4<br />The final step is the use of water to flush toilets. This is usually the last step in the water system. The water that was used for drinking and washing is now used to flush toilets. This is the last step because it is the final use of the water before it is either reused or recycled.