2 季节
81 插曲
Crash Course Biology - Season 2 Episode 21 第 21 集
This is a love letter to water, life’s solvent, and one of the most wonderful molecules around. In this episode of Crash Course Biology, we’ll learn about how water’s polarity and hydrogen bonding help it sustain life on a larger scale. We’ll see how some water-based solutions can be acidic or basic, and examine how our bodies maintain the narrow pH range necessary for life.
- 国家 : United States of America
- 类型 : Documentary
- 导向器 :
- 投 : Samuel Ramsey
