People with diabetes often receive insulin injections. What effect does insulin have on the body? O It raises blood-sugar levels.
It lowers blood-sugar levels.
O It raises glucagon levels.
O It lowers glucagon levels.

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.

Select three sports that require participants to be highly fit before the beginning a: snowboarding b: skydiving c: rock climbing d: bungee jumping e: free diving f: hiking

Compare the composition of the moon's surface with the composition of the earth's surface.