This document discusses the three main life processes that all living things carry out: nutrition, reproduction, and interaction. It explains that nutrition involves obtaining nutrients from food to grow and function properly. Plants produce their own food through photosynthesis using sunlight, water and soil nutrients, while animals obtain food by eating plants or other animals. Reproduction means making new living things, which animals do through laying eggs or giving birth, and plants do through seeds or spores. For interaction, animals move and communicate with their environment, while plants grow towards light and water.