How do biotechnologists help with modern mining methods? A) They evaluate the microbes contained in minerals to determine the grade of the ore.
B) They devise methods to kill the microbes in minerals to make the ore more profitable.
C) They look for ways to genetically engineer microbes to aid in obtaining specific minerals.
D) They propose ways to genetically engineer microbes to reduce gases created by mining.

Gretta needs a $300,000 mortgage and is offered two choices. the monthly payments for the fixed rate and predicted payments for the arm are shown. adjustable rate mortgage year monthly payment 1-15 $1,610.46 adjustable rate mortgage year monthly payment 1-5 $1,520.06 6-15 $1,728.54 what is the difference between the total costs of the mortgages rounded to the nearest hundred? $8,700 $1,700 $15,800 $5,000