Because Earth Sciences covers a lot of ground (pun intended) and nobody has the time or ability to do everything well and thouroughly. The field is very highly specialized in its subdivisions.
Answer:

Explanation:
Given that,

We need to find the area of sector QRS. The formula for the area of a sector is given by :

QR = RS = r = 17 units
So,

So, the area of sector QRS is 
The Pacific Ocean is <span>62.46 million mi^2 </span><span>large.
Hope this helps!</span>
Answer:
the ratio between the water assimilated into the body and that lost from the body also : the condition of the body when this ratio approximates equilibrium.
Explanation: