When may a scientific theory be revised? O never, once it has been published
O when a single experiment's data goes against it
when a new hypothesis provides a better explanation
O after a large amount of data refutes it

answer; blank(1); surveys; blank(2); experiment;

(i got this from the internet)

explanation:

he would destroy their leader and force them to a new religion. why would the 'columbian exchange' be considered the tsunami of unintentional "bio-terrorism"? ? some terrorists used to mail powder substances, so that when the victim opened it, the powder could get into their system and make them sick.

(hope this )