Which observation would best support that the bond present was a covalent bond?
a) the compound present contains a nonmetal.
eliminate
b) carbon and oxygen share pairs of valence electrons.
c) aluminum is contained in a compound and forms a cation.
d) the valence electrons are involved in the bonding between atoms.

genetics is the study of how dna works, the methodologies defining the new recent technologies allow scientist to have a panoramic view of the entire dna landscape, especially how genomes interact with their environment, including off course, factors outside their organisms.

thus is very possible the existence of both scenarios, where populations of isolated individuals have different genetic traits, and share traits related to genetic mutation, due rats can easily travel overseas using human transport channels. so scientists could get a vast number of data, including human interaction, evolution of rodents, health development, spread of infections, development of new organisms, how genomes evolve in different environments and so on.

cuba is a multi-ethnic nation

the answer is c. they believed the royal family should hold all the power.