Environmental Studies

Which of the following materials cannot be recycled?

• aluminum

• plastic bags

• glass bottles

• cartons

Stagnant water breeds:

• mosquitoes

• frogs

• fishes

• animals

What occurs when water flows or collects over land that is usually dry?

• dam

• flood

• floodway

• levee

The earth’s atmosphere is made up of these gases

• all of these

• nitrogen

• oxygen

• carbon dioxide

Which of the following is represented by the given figure?

• Life cycle of fish

• Life cycle of shark

• Food chain in the sea

• Growth of sea organisms

When harmful substances are releases into the water bodies it is called

• Water pollution

• Noise pollution

• Air pollution

• Soil pollution

______ is a harmful gas which causes air pollution

• Carbon-dioxide

• Nitrogen

• Oxygen

• All of these

____________ is the addition of harmful materials to the environment

• pollution

• ecotourism

• conservation

• recycle

Trash that is not disposed off; in a way that prevents harm to ecosystems is called ____.

• compost

• decomposer

• litter

• recycle

Which of the following is NOT one of the 3 “R’s” that helps to conserve the environment?

• recycle

• replace

• reduce

• reuse