<span>Marseilles, I believe. </span>
The problem starts already earlier:wildlife experts can only estimate the number of species in the world generally!
This is the case because there are simply too many species, and it takes time to documents them; because some areas (ocean bottom for example) are very hard to access and because sometimes it's hard to know whether we're talking about a new species or a variation within the same species.
so if we even don't know how many species there are, it's even harder to know how many are endangered.
Answer:
It can reduce brain injuries.
Explanation:
This rule of wearing helmet is a good initiative taken by the commissioner of the national football league. these helmets reduce the risk of concussions because these helmets are made of good materials and able to protect the head of the players from brain injury. So avoid such type of injuries, the helmet should be used by the player which can absorb all the energy and protect the head of the player.
<span>mercantile 10. is the correct answer</span>