Answer:
Two key adaptations they have are the ability to survive in waterlogged and anoxic (no oxygen) soil, and the ability to tolerate brackish waters. Some mangroves remove salt from brackish estuarine waters through ultra-filtration in their roots.
Explanation:
Sorry I couldn’t do three only to but I hope this still helps you.
Answer:
they are not getting enough sunlight to begin with the growth tends to become weak
Explanation:
The Algae. Unless you want to get into the microorganisms that contribute to the algae's growth.