The punnett square below predicts the outcome of a genetic cross done by a breeder.

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.

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air