The most probable and most likely answer to this problem would be genetic engineering.
Since this talks about scientists having recently modified the bacteria that cause tooth decay by inserting a fragment of DNA into the bacteria's DNA that prevents it from producing lactic acid, it has now altered the genetic composition of the bacteria. Genetically engineering bacteria and viruses have their advantages and, of course, disadvantages, either direct ones or long term ones. Genetic engineering would prove that it would be one of the many weapons that we could use to counter problems in the coming future.
She has to place one plant in sunlight and one in shade to accurately tell the difference.
Arteries are blood carrying vessels which have thick, elastic, muscular walls, have no valves and in which blood flows under high pressure. The make up of arteries is unique to their function of transporting blood under high pressure.
All arteries carry oxygenated blood from the heart to all other parts of the body, with the exception of the pulmonary artery which carries de-oxygenated blood from the heart to the lungs. It is the only artery that transports blood which has not been oxygenated.
<span> If you use as much force on a bigger object and a smaller object the smaller object will have more acceleration, because the smaller object has less mass. </span>
There are often not more than one or two independent variables tested in an experiment, otherwise it is difficult to determine the influence of each upon the final results. There may be several dependent variables, because manipulating the independent variable can influence many different things.