Carbon, hydrogen and oxygen.
Based on the given conversation above between Ben and his parents, the testable question for the hurricane research of Ben is option C: "Is the number of hurricanes increasing each year?" This is the testable question since they are arguing about the number of hurricanes in the past summers. Hope this helps.
Biology, Chemistry, physics and calculus.
Answer:
In compound with other elements.....
Answer:
anaerobic chemosynthetic carbon dioxide
