Unit 8 Pollution Enviro

What are two main underlying causes of water pollution?

• rapid population growth and industrialization

• global warming and the greenhouse effect

• population growth and over fertilization of farmland

• Industry dumping hot water and wastes into rivers and streams

Which type of water pollution may occur after a lot is cleared to build a house?

• Toxic

• Sediment

• Nutrient

• Bacterial

Which type of water pollution occurs if a farmer decides to apply extra fertilizer to their field?

• Toxic

• Sediment

• Nutrient

• Bacterial

In what way are point source pollution and non-point source pollution different?

• The contents of the pollution differ

• If the source is industrial or residential

• The number of sources from which the pollution is produced

• If the pollutants are chemical or physical

A local creek was being polluted. It was determined that the pollution was coming from a leak in an underground storage tank at a local carpet mill. What type of pollution is this?

• point source pollution

• non-point source pollution

• thermal pollution

• sediment pollution

Ecologist studying Lake Lanier discover it has high levels of nutrients such as nitrogen and phosphorus in the water. They determine the nutrients are common in fertilizers and are in runoff from local neighborhoods around the lake. This is an example of which type of pollution?

• point source pollution

• non-point source pollution

• thermal pollution

• bacterial pollution

What happens when excessive amounts of phosphates get into our lakes and ponds?

• they cause a reaction that increases the temperature of the water

• phosphates clean the water making the water perfectly clear

• phosphates kill algae which make up a major part of the aquatic ecosystem

• phosphates cause eutrophication to occur causing everything in the lake to eventually die

What is the main effect of artificial eutrophication?

• a lack of overall nutrients in the water makes it uninhabitable for organisms

• excess nutrients in the water causes algal blooms that consume all of the oxygen causing everything to die

• a lack of light in the water causes an accumulation of sediment and debris to occur

• excess light in the water causes the amount of bacteria to increase leading to a large number of infections in the aquatic organisms

What type of pollution is occurring if a manufacturing plant releases high temperature water into a local river causing fish kills and other issues?

• nutrient

• bacterial

• thermal

• sediment

How does the accumulation of plastic in the ocean affect the marine organisms?

• Turtles eat plastic bags thinking they are jellyfish and they die from internal blockage.

• Plastic rings from six packs will get caught on birds' beaks and cause them to become strangled

• Seals and other marine mammals get tangled in fishing lines and drown

• All of the choices are correct