6. When the trees became dark, which moth was now at the advantage, the light or dark? __ 7. What is it called when some living thing has a trait that helps them survive?

## Step1<br />The first question is about the concept of natural selection in biology. The scenario described is a classic example of industrial melanism, where the frequency of dark-colored moths increases in a population due to pollution. The soot from factories darkens the trees, making the dark-colored moths less visible to predators. This is an example of an adaptive trait that increases the survival rate of the moth.<br /><br />## Step2<br />The second question is about the term used to describe a trait that helps an organism survive. This is a concept in biology known as an "adaptation". Adaptations are traits that have evolved over time to help an organism survive and reproduce in its environment.