Perform the following operation and express the answer in scientific notation. 3.8×10^-5 ÷ 8.1×10^3

d is

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current

the major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary

i think the answer is terrae but not 100 percent sure. ▓▬▬ §