Answer:

Explanation:
As we know that sound level is given as

so here we have

now we can take anti log both sides

so we have

so above is the expression for the intensity of sound in terms of reference intensity and sound level
Answer:
The principal hair fiber used to produce textile fabrics is sheep's wool. In wild sheep, the wool is a short, soft underlayer protected by longer, coarser hair. ... Fur fibers from animals such as mink and beavers are sometimes blended with other hairs to spin luxury yarns but are most often found as fur pelts.
According to the internet over 2% of earths fresh water is unavailable: locked up in glaciers, polar ice caps, atmosphere, and soil.
Was the first act to actually set emissions towards factory smoke and pollution