Please help asap. i really need to finisht this

Organisms that successfully adapt will leave to grownone of the above

Which is an example of a vestigial structure? a: paw of a lionb: wing of a birdc: appendix of a humand: tail of a cat(i think it's a but i'm not sure)

Joseph lives in a country that lacks basic social infrastructure. moreover, the banking system is not managed properly. the level of education is low. in which type of country is joseph residing? generally, what is the trend of fertility rate in such countries?