The answer is Pennsylvanian. I worked on this before. The Pennsylvanian era is a subperiod of the Carboniferous Period. i really hope this helps :)
Answer:
c
Explanation:
you got this and never give up
Answer: your answer for number 1 is decade millennium or century
Your answer for number 2 is a d or b .
Hope this helps.
Explanation:
D make ah model or a one of those