Professor Kettlewell observed peppered moths after the industrial revolution. He observed that the once rare black mutarł moths were more plentiful since they blended
in with their surroundings better than the once common peppered moth (see Figure 3
above). This is because -

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.)chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?