Answer:
Let's find out if exhaled air contains carbon dioxide.
Take a glass and fill it up with some limewater. ... The limewater turns milky. This goes to show that the carbon dioxide present in the exhaled air turns the limewater chalky. The limewater turns from clear and colourless to chalky.
Explanation:
Answer:
1 they speed up to change the rate
Explanation:
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Answer:
B - It hits an object
Explanation:
Once light has been produced, it will keep travelling in a straight line until it hits something else.
