1. Cellular Structure: All living things are made up of one or more cells. Cells are the basic units of life and perform all the functions necessary for survival.
2. Genetic Material: All living organisms contain DNA (deoxyribonucleic acid) as their genetic material. DNA carries the instructions for building and maintaining an organism.
3. Metabolism: All living things carry out metabolic processes, which involve chemical reactions that break down nutrients and release energy for growth, maintenance, and reproduction.
4. Growth and Development: All living organisms grow and develop over time. This involves an increase in size and complexity.
5. Reproduction: All living organisms reproduce, creating new individuals of the same species. This ensures the continuation of life.
6. Response to Stimuli: All living organisms respond to changes in their environment, such as changes in temperature, light, or chemical composition.
7. Homeostasis: All living organisms maintain a stable internal environment, despite changes in the external environment. This is known as homeostasis.
8. Adaptation: All living organisms evolve over time through adaptation to their environment. This allows them to survive and reproduce in their specific conditions.
These fundamental similarities highlight the unity of life on Earth, indicating that all organisms share a common ancestor.
