Environmental Science
What is Carcinogen?

Drugs used for curing cancer
Drugs for curing infectious disease
Food colourants
Cancer causing agent

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Environmental Science
The north-facing side of a hill in a mountainous region in the US tends to:

Receive less sunlight during a year than the south-facing side
Have snow on the ground for a longer period of time in winter compared to the south-facing side
Grow a variety of trees that are typically observed at higher elevation
Be a better location for a ski run than the south-facing side
All of these

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