What are the economic important of algae in the reef building?

Here's one way to follow the scientific method. place the missing steps in the correct position in the process.

What process decreases the salinity of ocean water? decreased precipitationdecreased melting of glaciersincreased evaporationincreased runoff from rivers

Crystallization from cooling magma disvribe one way that a atoms bond b protons attract electronsc ions combine d minerals form