Respiration:1

An online crossword puzzle with 9 words. Play it free at AgileCrosswords.com.

Clues

• Turns lime water cloudy
• Exchange of gases through lungs
• The main source of energy in our food
• The gas used both in combustion and respiration
• Present both in fuels and food
• A process which produces energy for our body
• The scientific name for 'burning'
• The organ which pumps gases in and out of our bodies
• Methane gas is a good example of it

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