Answer:
RADON GAS
Explanation:
This is the main source of indoor radon. It flows through the air, ground and surface water. It primarily finds it's way through the soil into buildings and into water supplies. Once it escapes from soil, it discharges from emission stacks into the air.
B is the answer diabetes is one of the reasons people have a diet in high fat.
Note.... sin (-θ) = -sin(θ)
And tanθ =√15 / 15 = 1 / √15
So
-sin (θ) = -1/4 ⇒ sin (θ) = 1/4
And
tan (θ) = sin (θ) / cos(θ) rearrange as
cos (θ) = sin (θ) / tan (θ) = (1/4) / (1/ √15) = (1/4) * (√15 / 1) = √15 / 4 ⇒ C
