Our solar system lies in

a)
the central ring of the milky way.

b)
one of the spiral arms of the milky way.

c)
in the galactic center of the milky way.

d)
outside the spiral arms of the milky way.

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?

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important