Answer:
GRAMMAR
S -> AB
A -> xxAyy | xxyy
B -> yyBzz | yz
EXPLANATION
A is for even number of x's followed by that number of y's
B is for odd number of y's followed by that number of z's
Builderman is dksbdkbsnsbs
Answer:
yes it is certainly good ice cream
Answer: LED have the lowest cost of operation.
Explanation:
If we ignore the initial procurement cost of the items the operational cost of any device consuming electricity is given by

Among the three item's LED consumes the lowest power to give the same level of brightness as compared to the other 2 item's thus LED's shall have the lowest operational cost.
Answer:
The results of a percolation test will determine if there is suitable drainage and the size of the drain field that will be required for a septic system.