Practice Exam

From the picture of food chain, what is the order of energy transfer?

• producer, carnivore, herbivore, decomposer

• carnivore, herbivore, decomposer,

  omnivore

• decomposer,

  producer, carnivore, herbivore

• producer, herbivore, carnivore, omnivore

What kind of relationship between a buffalo and a mynah (นกเอี้ยง) in an ecosystem?

• Both benefit each other. (+,+)

• Both harm each other (-,-)

• One gain benefit and one is harmed. (+,-)

• Both are unaffected. (0,0)

One bucket of water taken from a river has high DO and low BOD, what is the quality of this water?

• High nutrient water

• Clean water

• Alkaline water

• Waste water

Who is most affected by noise pollution?

• A cleaning lady uses a vacuum to clean an office's floor.

• A boy is learning from a teacher's lecture in a classroom.

• A college student is performing music on a stage in university.

• A carpenter uses chainsaw to cut a tree.

What can the following energy sources be classified: firewood, husk, wind, coal?

• primary energy

• secondary energy

• renewable energy

• non-renewable energy

What factor does not cause greenhouse effect?

• increasing use of technology

• increasing populations

• volcanic eruption

• wind circulation