The heat can move from one object to another by conduction. Vibrating objects produce sound. The pitch of the sound can be varied by changing the rate of vibration. Sound is produced by vibrations and is transmitted through matter in all directions. The characteristics of organisms Organisms have basic needs, which for animals are air, water, and food.
Organisms can only survive in environments in which they can meet their needs.
The world has many different environments, and distinct environments support the life of different types of organisms. Each plant or animal has different structures which serve different functions in growth, survival, and reproduction. For example, humans have distinct structures of the body for walking, holding, seeing, and talking. The behavior of individual organisms is influenced by internal cues such as hunger and by external cues such as an environmental change. Humans and other organisms have senses that help them detect internal and external cues.