What is hspd-12?

What is rule of addition of integers? What aids it's gas exchange with its large surface area? What is the answer to a 3x3 magic square filled with the numbers 1 9 but each number can't touch a consecutive number? What two numbers multiplied equal 7? What is 1 over 12 in simplest form? How much is ten dozen? I put the symbol for cubed and squared before the 3 and the 2's. I meant r to 3rd power or r or t to the second power.How How do I factor this equation18r3t2 plus 12r2t2 -6r2t? What is the next answer AB 3 D 56 G? Why does odd minus odd equal even? 18.4 is what percent of 10? How many 7 digit phone numbers are available if a digit can only be used once and the first number can not be 0 or 1? Who are the kings in The Bible? What is the LCM of 600 and 140? How long is 80 inches in feet? What is the equivalent percent to 1.5? What are 3 properties of rock? What is the first number over 100 in the following sequence 1 1 2 3 5 8 13 21? What is the benchmark for thousandths of an inch? What is two third of 33? What is a group of numbers collected together to study?