how many pairs of electrons does the carbon atom share with each hydrogen atom in the chemical compound methane which has the formula ch 4?

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

2. if scientists identify an animal with bilateral symmetry and no segmentation, which phylum can it definitely not belong to? a. roundworms b. annelids c. mollusks d. flatworms

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?