The type of energy we will use on Mars will be Solar Power. This means the sun will power it. We will also have back up batteries to help control the temperature. Using solar power can also help make energy. If we conserve and trap the sun's heat we can produce energy.
Food Plants produce foods like vegetables and wheat.
With wheat we can make bread. We can have raw or cooked veggies. The plants will be one of the most important sources of food and of they all die out then we will have to find another way to live. Without plants life on Mars would be impossible. Wastes All of the food that is not eaten will be stored in a freezer type thing.