How long can primary succession take to be completed?
a. ten to hundreds of years
b. hundreds to ten thousands of years
c. thousands to millions of years
d. hundreds to thousands of years

Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?

Is dna the same in every cell in the human body explain your answer

18. over time, how do sand dunes tend to migrate? a. perpendicular to the movement of the wind b. in the same direction as the wind blows c. toward the wind d. in random directions