2 季节
81 插曲
Crash Course Biology - Season 2 Episode 41 第 41 集
There are countless types of plants and animals on Earth, but how do they work? In this episode of Crash Course Biology, we’ll take a bird’s eye view of how multicellular life functions, including how it’s organized, how it regulates itself to maintain homeostasis, and the big question: Why are these living things so wildly complex?
- 国家 : United States of America
- 类型 : Documentary
- 导向器 :
- 投 : Samuel Ramsey
