Describe the distribution of water on earth. where is most of the fresh water located

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus