benedict's solution contains copper(2) sulphate (blue). the copper (2) salt can be reduced to a red precipitate of copper (1) oxide by a reducing agent. some sugars have this reducing property

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.

Compare the two theories regarding the evolution of dinosaurs and then consider the cladogram above. although the two theories differ on the evolutionary path of dinosaurs, they agree that

Apopulation follows a period of decline; overshoot increase; overshoot increase; scarcity scarcity; dieback