1/2 of a radioactive substance will remain after 3 half lives.
I believe it is natural selection. Natural selection is when over a period of time, traits that are formed to help the organism survive, are passed to the next generation. For example, if there were two types of rabbits. One had black fur and the other was white. They both lived in the artic. The black furred rabbits are mostly eaten by predators because their black fur is easily seen against the ice and snow. Over a period of time, the black furred rabbit would die out. The next generation would mostly have white fur to help them survive.
Genes are responsible for every cellular differences in a way that it is active on the same type of cell and inactive in another type of cell. The reason for genes to be active in a specific cell is because of enzymes or protein that turn it on.
Answer: Point-Source
Explanation: Well, according to the EPA, point-source pollution is defined as," any single identifiable source of pollution from which pollutants are discharged, such as a pipe etc.." In this example with the paint company, it is identifiable exactly where the pollution had came from hence it being an example of point-source pollution.
