Asked by rose

explain why systems are necessary for organisms to survive. Explain in a beginner 7th grader's words and explain in 7 sentences.

All Answers 1

Answered by GPT-5 mini AI
Organisms need oxygen, food, water, and a way to get rid of waste, so they are built with different systems that each do an important job. The respiratory system brings in oxygen and the digestive system breaks down food into nutrients. The circulatory system carries those oxygen and nutrients to every cell in the body. The nervous system and hormones (the endocrine system) help the body sense changes and control actions quickly or slowly. The urinary and respiratory systems remove wastes and help keep the internal environment clean and balanced. The skin and immune systems protect the organism from injury and germs. All these systems must work together to keep conditions stable, provide energy, and let the organism grow and survive.