Answer:
We could use up all of them right away and not have the resources for humans and animals to survive.
Explanation:
Right now, we are using our natural resources at a consistent rate. We sometimes use to many of them in one day. If we continue using up our natural resources at the rate we are right now. We may not have the necessary resources to survive in about 10-20 years.
Hope this helps!
 
        
             
        
        
        
None; sharks don't have bones, instead, they have strong cartilage, much like what our noses are made up of
        
             
        
        
        
The best I think would be meters
        
             
        
        
        
False
their legs were made form the spine of stingrays and they were used to ward of bad storms.