化變層
Typically the green and purple sulfur bacteria live in that chemocline, enjoying the supply of H2S from below and sunlight from above. 綠硫菌與紫硫菌通常會(huì)生活在化變層中，同時(shí)享受下方源源不絕的硫化氫與上方充足的陽(yáng)光。
