Many rare and/or endemic species exhibit one or more of the following attributes which make them especially prone to extinction: (1) narrow (and single) geographical range, (2) only one or a few populations, (3) small population size and little genetic variability, (4) over-exploitation by people
Try putting this in biology category not chemistry so more ppl can help :)
A.)49.4974874 moles or 49.5 moles
B.)2.980808730172671e+25 or 3e+25
I believe it can be warm because usually the surface below us is warm itself, causing the air to be warm as well. The temperature can vary as well
