Zero waste agriculture means that farmers try to use every single part of their crops and animals, so that nothing goes to waste. This is important because throwing things away can harm the environment and waste valuable resources.
If you think about it like food, imagine you are trying to eat every part of an apple. You might eat the skin, the core with the seeds, and even the stem! That's kind of like zero waste agriculture.
Farmers can do things like compost leftovers from their crops to make fertilizer for their next plants, use animal manure to fertilize fields, and feed leftover crops to their animals. They might also try to find other uses for leftover parts, like using corn stalks for fuel or building materials.
By using every part of what they grow, farmers can help protect the earth and be more efficient with their resources.