ENV320 FINAL PAPER 2026 TESTED
QUESTIONS WITH ACCURATE SOLUTIONS
GRADED A+
●● Nonpoint source pollution.
Answer: Diffuse pollution that comes from many sources, like runoff
from farms or cities.
●● Examples of point source pollution.
Answer: Factory discharge pipes, sewage treatment plants, oil spills
from tankers.
●● Examples of nonpoint source pollution.
Answer: Agricultural runoff, urban runoff, pesticides, fertilizers,
stormwater.
●● 3 biggest contributors to water pollution historically.
Answer: Industry, agriculture, sewage/wastewater.
●● Other contributors to water pollution.
Answer: Mining, oil spills, plastic waste, urban runoff, landfills.
, ●● Pathogens in polluted water.
Answer: Bacteria, viruses, parasites, protozoa.
●● Pollutant that causes high pathogens in water.
Answer: Sewage and animal waste.
●● Other pollutants in water and sources.
Answer: Nutrients (fertilizer runoff), heavy metals (industry), oil (spills),
sediment (erosion), chemicals (pesticides).
●● 1969 environmental event.
Answer: Cuyahoga River caught fire due to pollution.
●● 1977 environmental event.
Answer: Love Canal toxic waste disaster.
●● Environmental Protection Agency (EPA).
Answer: Agency founded in 1970 that enforces environmental laws.
●● Clean Water Act.
Answer: Passed in 1972; made it illegal to discharge pollutants into U.S.
waters without a permit.
QUESTIONS WITH ACCURATE SOLUTIONS
GRADED A+
●● Nonpoint source pollution.
Answer: Diffuse pollution that comes from many sources, like runoff
from farms or cities.
●● Examples of point source pollution.
Answer: Factory discharge pipes, sewage treatment plants, oil spills
from tankers.
●● Examples of nonpoint source pollution.
Answer: Agricultural runoff, urban runoff, pesticides, fertilizers,
stormwater.
●● 3 biggest contributors to water pollution historically.
Answer: Industry, agriculture, sewage/wastewater.
●● Other contributors to water pollution.
Answer: Mining, oil spills, plastic waste, urban runoff, landfills.
, ●● Pathogens in polluted water.
Answer: Bacteria, viruses, parasites, protozoa.
●● Pollutant that causes high pathogens in water.
Answer: Sewage and animal waste.
●● Other pollutants in water and sources.
Answer: Nutrients (fertilizer runoff), heavy metals (industry), oil (spills),
sediment (erosion), chemicals (pesticides).
●● 1969 environmental event.
Answer: Cuyahoga River caught fire due to pollution.
●● 1977 environmental event.
Answer: Love Canal toxic waste disaster.
●● Environmental Protection Agency (EPA).
Answer: Agency founded in 1970 that enforces environmental laws.
●● Clean Water Act.
Answer: Passed in 1972; made it illegal to discharge pollutants into U.S.
waters without a permit.
