Pollution

Student K says that, "using solar panel could greatly help reduce pollutions," which of the following support Student K's opinion?

• Installing solar panel help purify polluted air.

• Solar panels reduced noise pollution and solid waste pollution.

• Solar panels reduce usage of electricity which is mainly generated from the burning of fossil fuels.

• Energy obtained from solar panel reduce the consumption of water and thus help reduce water pollution.

From the table showing of data of three parameters in three different rivers, what can we say about the quality of water in the rivers?

• Water in river A has the best quality because it has lowest BOD and highest DO.

• Water in river B has the worst quality because it has lowest DO and pH of 7.

• Water in river C has the best quality because it has highest BOD and lowest pH.

• The quality of water in all three rivers are about the same because they all have DO no more than 10 mg/l.

What is the quality of the water with DO less than 2 mg/l and pH of 9?

• It is polluted and alkaline water.

• It is polluted and acidic water.

• It is normal and acidic water.

• It is normal and alkaline water

Which is NOT the way to solve PM 2.5 air pollution problem?

• Stop burning wood or trash in open area

• Encourage the use of solar and wind energy

• Set air quality standards and emission

• Raise awareness of trash segregation

Which of the following action causes soil pollution?

• Disposing biodegradable products into landfills

• Sewage wastewater treatment before releasing to river

• Utilization of organic fertilizer in farming

• Industrial mining and manufacturing

Which is NOT correct about noise pollution?

• The sources of noise pollution can be from both nature and humans.

• Noise pollution can cause high blood pressure

• Constant noise above 20 decibel is considered noise pollution

• Behavioral disorder is one of the effects caused by noise pollution

What is NOT a solution to solid waste pollution?

• Put a price on recyclable trash

• Stop using plastic

• Reuse most products that can be reused

• Lowering tax on plastic production

Which statement is about "reducing" in the 7'R concept?

• We need to separate trash into different containers.

• Student A buys a bag of shampoo to fill in an empty bottle

• There are plenty of fabric bags available for free in a store

• A car owner uses less amount of water to wash his/her car

A woman have found a store that can fix her shoes. She put her broken shoes in an old shoebox and go to the store. What are the 7R principles does this woman follow?

• Refuse and return

• Repair and reuse

• Reduce and return

• Return and repair

Which of the following is correct about algae bloom?

• Too much blooming of flowers over surface of water.

• The incidence caused by excessive amount of potassium in the river.

• It happens because there is too much growth of plants over the surface of a river.

• Too much oxygen in the water produce excessive algae.