Which of the following statements is true about aquaculture? An aquaculturist can throw some young shrimp in a pond, and they will take care of themselves. B It means "cultivating small acreages of land." An aquaculturist must tend to the tanks carefully to make sure predators do not eat the shrimp. D The tanks are large aquariums built in warehouses .

It depends on the surface of the levels. the rougher the surface, the greater is the frictional force. for rougher surfaces, you would need to exert greater force to move the object. the concept is that, you must overcome the frictional force in order to bring the object into motion. this is the reason why we add lubricants to the joints so they could easily move. this answer was on

The answer is nucleic acid 

Yes yes yes very good