8. What is an adaptation? 9. How does the environment in which an organism lives determine which traits are
adaptations?
10. What is a cladogram and why is it used?
11. Use the chart below to answer the questions
a. Which event occurred first?
b. Which event occurred last?

Ashort, vertical, solid, or fleshy stem possessed by gladiolus and which is used in reproduction is termed a

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.

Talking listening and reacting non verbally are all part of communicating