Air and Water

The term of resource that is concentrated or formed at a rate very much slower than its rate of consumption is...

• natural resource

• finite resource

• infinite resource

• synthetic resource

Wood is an infinite resource because... .

• The amount can't fulfill the need of fuel

• the amount are limited

• It's made by plants that can be renewed by planting

• using wood as fuel will cause natural damage

Phytomining is ... .

• the production of a metal crop by using high-biomass plants

• The research about plants

• Mining technique in the forest

• Having plants

Carbon has taken away from the air by... .

• respiration

• combustion

• rust

• photosynthesis

Carbon's given to the air by... .

• photosynthesis

• corrosion

• neutralisation reaction

• respiration

The picture shows ... .

• air cycle

• water cycle

• nitrogen cycle

• oxygen cycle

Look at the diagram above. The process for number (1) and (2) are... .

• denitrification and nitrogen fixation

• nitrogen fixation and denitrification

• nitrification and denitrification

• denitrification and nitrification

The process in the diagram is ... .

• nitrification

• denitrification

• nitrogen fixation

• amonification

The chemical reaction diagram above shows... .

• nitrification

• nitrogen fixation

• denitrification

• corrotion

What correct conclusion you have to write from the experiment result shown in the picture above?

• Plants with enough nitrogen will have longer root

• Plants with low nitrogen will have shorter root

• Nitrogen help plant to grow bigger

• Nitrogen help plants to grow better leave and stem