Apopulation of plants growing on an island consisted of two varieties, one with thorns and the other without. over a period of many years, the variety with thorns gradually disappeared. which process most likely brought about this change in the plant population? gene flow genetic drift natural selection random mutation

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.

The united states produces an average of 429 billion pounds of food annually. about 133 billion pounds of that food ends up as waste.the percentage of food that the united states wastes each year is %.

Select the word from the list that best fits the definition a system made of 25 satellites