<span>"Restriction enzymes would be used to cut the DNA into smaller pieces." is the statements best describes the first thing researchers need to manipulate dna. Before manipulation it is needed to isolate the desired DNA segment. Restriction enzyme can be also called as restriction endonuclease.</span>
As the ocean level rises sea water floods inland and puts a risk to water reserves like dammed lakes and other places by contamination
Answer:
The circulatory system comprises of blood vessels which help in removing carbon dioxide from the body. The carbon dioxide produced by the cells is collected by the capillaries where the carbon dioxide gets dissolved in the blood. This blood is carried to the heart via the veins. The heart pumps the deoxygenated blood to the lungs where gaseous exchange occurs between the blood capillaries and the alveoli of the lungs. When we exhale, the carbon dioxide is breathed out.
