To determine whether DNA replication is semiconservative, conservative, or dispersive, Meselson and Stahl labeled E. coli DNA with a regimen of heavy nitrogen for one round of replication and then transferred these cells to a light nitrogen regimen for two more rounds of replication. Which statement would not have been true within the context of this experiment

Elephants in the savanna regions of africa dig holes in dried up river beds to reach water lying just below the surface. these holes provide drinking water for other animals as well. so, without the elephants, many animals might otherwise die from lack of water during the dry season. the location in which the elephants live is an example of a/n and the role they play in creating water holes is an example of a a) ecosystem; habitat b) community; niche c) habitat; niche d) niche; habitat