Nutrient cycle

Nutrient cycle is like a wheel that plants and animals use to get the nutrients they need to stay alive. When plants take in carbon dioxide from the air and water from the ground, they use sunshine to turn them into food. Animals eat the food the plants make and get the nutrients their bodies need to survive. The animals also produce waste, which is full of nutrients like nitrogen and phosphorus. Those nutrients go back into the soil, which helps the plants grow more food. This all happens over and over again, so it's like a wheel that keeps going around and around.