no alot of sharks are aggressive they will attack if un provokede
No, because at the zoo you can pet smooth dog sharks. They are very nice and will never hurt you.
Yes
All sharks are fairly docile, unless they are angry. Sharks will not eat you, and would only do so unless very very very hungry, or if they are in a frenzy. Once sharks sense blood, they frenzy, which causes them to attack anything.
Not all because some are nice like.e.g the nurse shark at dark they would take you for a ride.
The king of all sharks is the Megalodon.
Sharks have not shown any great disposition to domestication, and act almost exclusively on instinct. So they cannot be characterized as nice or not nice. They will feed or prey without any consideration of whether it is something or someone familiar. (As food?) It all depends on how you prepare them. Personally I prefer them battered.
Don't really know how "nice" would apply to a Shark. They're not cuddly and sociable. But since they can't eat humans, I assume inability to do severe damage can be seen as "nice".
there are 350 all of the name of the sharks
Some sharks, but not all.
i think that yes all the sharks are heavy depending on their size
All sharks (except the San Jose Sharks) live in water
Man is the only predator of sharks.