Which diagram best represents the percentage of this radioactive isotope sample that will remain
after 2 half-lives?
select one:
a. diagram 3
b. diagram 4
c. diagram 2
d. diagram 1

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects

oxygen +1 most likely