If your eyes happen to come into contact with acetic acid, you should immediately wash your eyes with water for no less than 15 minutes
One way is by comparative anatomy. Comparing the similar bone structure of animals gives more proof of this theory. Also, the location of some animals compared to other animals of similar species is very convenient, and supports the theory of natural selection.
It would depend.
The weather might be different form mine. I can give you the four main types of clouds there are to help you identify them.
Cirrus clouds are wispy, feather like clouds. They are higher than the other types of clouds.
Stratus clouds are low level clouds that are light gray. They might cause fog.
Cumulus clouds are puffy, white clouds.
Cumulonimbus could are very tall clouds that produce T-Storms. They are a very dark gray.
There are other types of clouds, but these were the four I learned.