Explanation:
A keystone species is an organism that helps define an entire ecosystem. By keeping populations of mussels and barnacles in check, this sea star helps ensure healthy populations of seaweeds and the communities that feed on them—sea urchins, sea snails, limpets, and bivalves.
Mineral formation is a building of rocks.
Does this help
It is the last one that says, it can produce seeds all year around that can grow in dry and wet conditions.
Answer:
improper disposal of sewage
The answer to your question is Incense Cedar