The three finally arrived in the Philippines.
It's too hot here. I need to go for a swim to cool down.
Don't stay out too long though. It's harmful for your skin. Let's go inside.
Because the ozone layer that protects us from the sun's ultra violet radiation is now depleting.
It can increases the risk of skin cancer, cataracts, and a suppressed immune system.
Oh no, is the ozone layer in the troposphere?
Let's go outside and we'll show you around.
The ozone layer is in the stratosphere. The second layer above troposphere.
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