Answer:
15 :)
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Ecology is the study of ecosystems. That is, ecology is the study of how living organisms interact with each other and with the nonliving part of their environment.
It should be B If I am correct if I am not I am sorry
It would possibly be a but also b you’re welcome
One decade is 10 years+ 8 years is 18 total years
18 minus 9 is 9 years
Hope this helps
