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.
Chromosomes are made up of two sister chromatids , and are then dispersed as chromatin which is the DNA making up the chromosome.
Answer:
the change of DNA structure is a mutation
Explanation:
the molecule spreads
Answer:
Gasoline, paint, radioactive waste, pesticides, mercury, lead oil, and battery acid.
Hope that was helpful.Thank you!