Someone help I have no idea A direct electrical current is different from an alternating current because only the direct electrical current-

A- can be converted to other forms of energy

B- produces a high voltage

C- flows without resistance

D- allows the flow of electrons in one direction

thanks so much

Which macromolecules are polymers made of nucleotides (a) fatty acids (b) nucleic acids (c) carboxylic acids (d) amino acides

19. scientists use meteorites that hit earth to provide evidence of the composition of earth's interior because they hypothesize that

Zoo geographic regions are characterized by the presence of specific groups of animals these regions are determined by the taxonomic or phylogenetic relationships of animals. the map shows the zoogeographic regions proposed by the naturalist alfred russel wallace in 1876. the similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between the organisms in both locations ?