Increased silt in the river due to heavy machinery work can choke spawning areas, runoff from mine sites can pollute the water with heavy metals and acid mine drainage, and chemicals have, on occasion, poisoned entire water systems.
(Increased silt in the river due to heavy machinery work; can choke; spawning areas) (Increased silt in the river due to heavy machinery work; can pollute; the water) (chemicals; have; poisoned entire water systems)
Increased silt in the river due to heavy machinery work Increased silt in the river due to heavy machinery work chemicals
can choke can pollute have
spawning areas
the water
poisoned entire water systems