instruction:
In this task the focus is on physical knowledge about the world. Given the provided goal task in the input, describe a process that would lead to the asked outcome. This process often involves physical motions with objects, such as moving them, arranging them in a certain way, mixing them, shaking them, etc. 
question:
Why shouldn't I get a tan this summer?
answer:
The low level of photoprotection afforded by a tan is far outweighed by the damage incurred in its development and maintenance.


question:
how do you know if you have gas in your car?
answer:
check the gas gague.


question:
To make a cheap terrarium for gecko.
answer:

Use glass as the material is transparent and has adequate heat retention for the reptile.