Final answer:
Our bodies are made up of many complex tissues that work together to keep us alive and healthy. Tissues are groups of similar cells that work together to perform a specific function. Organs and organ systems also play a crucial role in maintaining our health.
Step-by-step explanation:
Our bodies are made up of many complex tissues that work both individually and together to keep us alive and healthy. Tissues are groups of similar cells that work together to perform a specific function. Several tissues combine to form organs, such as the stomach, heart, or brain.
These organs then work together to form organ systems like the digestive system, circulatory system, or nervous system.