Answer to Question #333841 in English for Lia

Question

1. There are two types of organisms based on the number of cells – unicellular and multicellular organisms. Humans, animals, and plants are examples of multicellular organisms that are made of different levels of biological organization. Do you think unicellular organisms such as bacteria are also composed of different levels of organization?

2. In elementary school you have learned that all organs and organ systems in organisms should work together. Why do you think these organs and organ systems need to work harmoniously?