We live in a world of constant change. Day becomes night and night day again. The seasons follow their yearly cycle. Plants grow new shoots and animals are born. They grow and eventually die, leaving the seeds for new life and growth. Within our changing world are repeating patterns of nature - life's cycles. All forms of life need energy to survive and this energy comes from food. Plants make their own food. Animals eat plants or other animals. This is another of life's cycles - the hunt for food. A grassy meadow is full of life. The many plants and animals in it are connected by a complex network of feeding. Follow the life of the meadow through the cycle of the seasons and see this network revealed.