That depends. If you describe '1 drop' of snow as a snowflake, than definitely one raindrop.
Flake
Water extraction by people or industry or less rain. pumping water from aquifers. less rain and snow
A rain drop if it is rain and a snow flake if it is snow.
it snow more
Snow
it gets both equal rain and snow
rain is more common than rain
acid
snow or rain
The world DOES receive more rain than snow.
rain
less rain and snow