Review the results of the following experiment. Temperature (°C)
Which hypothesis most likely explains the results at 60°C and
70°C?

Explain why phospholipid molecules form a bilayer. (3 marks)

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.

Which of the following terms describes all of the non-living components of an ecosystem