The details of the life cycle are different for different organisms. Each plant or animal has different structures that serve different functions in growth, survival, and reproduction. For example, humans have distinct body structures for walking, holding, seeing, and talking. Things change in steady, repetitive, or irregular ways, or sometimes in more than one way at the same time. Often the best way to tell which kinds of change are happening is to make a table or graph of measurement.
Organisms interact with one another in various ways besides providing food.
Many plants depend on animals for carrying their pollen to other plants or for dispersing their seeds. In something that consists of many parts, the parts usually influence one another. A student whose job is to check that the bulb has everything it needs to grow healthy. Green plant part attached to the stem. The leaf turns sunlight into energy.