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.
Answer:
The correct answer is "
".
Explanation:
The given function is:

and,

By differentiating with the help of Newton's Raphson method, we get
⇒ 
then,
⇒ 



During the valsalva's maneuver, glottis is the part of the larynx closes to increase intra-abdominal pressure, such as to help with defecation
The glottis is a slit-like opening on floor of the pharynx, is called valve that can controls airflow in and out from the respiratory passages. The glottis may opens directly into the boxlike larynx. This voice box is occurs in all the amphibians but is anatomically most of the complex in frogs.
The larynx, can commonly called the voice box or glottis, is the passageway for the air between the pharynx and above and the trachea below. It extends from the fourth the sixth vertebral levels.
To know more about glottis visit:
brainly.com/question/4524038
#SPJ4