Explain with correct reasons in each of the following scenarios: Impact on variances

1.Production department gets low quality materials, which was ordered by the purchase department

2.Person in the department of production not handling materials well

3.It was decided by the company to use new suppliers

4.sales of the product has dropped from 25 to 20 percent

5.Due to demand in market, a new competitor has entered in to the market

6.Production of finished units increases drastically more than budgeted.