U want point answer this question how many different thing can be diffrent colors

Why was the sample heated in step 5? describe the chemical principles involved in the reasoning behind this step?

Which of the following is not a defining characteristic of plants?

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.