The skeletal system is your body's central framework. It consists of bones and connective tissue, including cartilage, tendons, and ligaments. It's also called the musculoskeletal system
Your respiratory system takes in oxygen from the air. It also gets rid of carbon dioxide. Your digestive system absorbs water and nutrients from the food you eat. Your circulatory system carries oxygen, water, and nutrients to cells throughout your body.
1) symbiosis is a mutually beneficial relationship between two things.
2) the symbiosis in this example shows how the sea anemone provides the clown fish with protection and in return the clown fish helps the anemone by warding off any predators