Lab: Environmental Changes in a Watershed Answers

Which examples represent abiotic factors affecting biotic factors? Check all that apply.Sediment builds up in a riverbed, slowing the river’s speed.Ash from a volcanic eruption kills new plant growth.A hungry raccoon consumes a freshwater clam.Warm water from a nuclear power plant causes overgrowth of algae.A river floods and deposits tree pollen along its banks.

Pollution from a single, identifiable source is called source pollution.

Pollution that is difficult to link to a particular origin is called source pollution.