Which question can be answered by an experiment? A) Do sugar substitutes cause cancer? B) Did an ice age kill off the mastodons? C) What caused the extinction of the dinosaurs? D) Are all people susceptible to the Hunta virus?

by using  production possibilities graph.  opportunity costs are key expenses in financial matters and are utilized as a part of registering money saving advantage investigation of a venture. such expenses, be that as it may, are not recorded in the record books but rather are perceived in basic leadership by processing the money costs and their subsequent benefit or misfortune.

a.indigo and cochineal

b.animal hides

c.silver and gold

e.cacao beans and sugarcane

answer; calendar;

answer; the automatic system because it is a "gut reactor"