Woah, seriously? Vocab from 6th grade comes back to haunt you, eh? No, they are similar (both refer to large quantities) but not the same. Abundant means something can be found in large quantities and you likely have a surplus of the thing. Popular means that many people find something interesting/attractive/necessary etc.
There is no pronoun that means 'abundant source'. Some nouns that mean 'abundant source' are mine or well. Some adjectives that mean 'abundant source' are much and rife.
Abundant means well supplied, more than adequate.
an abundant number is less than the sum of its proper divisors
an abundant number is less than the sum of its proper divisors
a lot ex. you have an abundant supply of cats you have a lot of cats
that there is lots of it. that its common
exceedingly abundant
Abundant means plentiful or great in number, so depending on whether or not that's what you mean by generous (as in a generous supply), then the answer is yes.
An abundant number means its proper factors add up to more than that number.
I belive that it means that there is a lot of it. That
Assuming you mean the most abundant gas in the atmosphere, that would be nitrogen. From memory it accounts for about 80%.
Abundant means plentiful, - lots of something.