Boats that might skim the bottom or the sides of waterways will cause more sediment in these waters. Some turbidity can mean that there are harmful contaminants in the water. Waters with a high level of turbidity will loose ability to support aquatic life. Total solids mean all solid matter is either suspended or dissolved. Dissolved solids cannot be separated from water by sedimentation or flocculation.
Solubility is the ability of a substance to dissolve in another substance.
This is a hard question to answer. Some aquatic species survive well in highly turbid water. Most aquatic species survive better in waters with low turbidity. Suspended solids prevent sunlight from reaching aquatic plants. Without sunlight, photosynthesis cannot take place.