19) Which sequence correctly indicates the branching pattern of the human respiratory system? * trachea →bronchi →bronchioles
trachea →bronchioles →bronchi
bronchi → trachea →bronchioles
bronchioles →trachea →bronchi

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 finches on the galapagos island were similar in form except for variations of their beaks. darwin observed that these variations were useful for: attracting a mate defending territory building nests gathering food

2points what do bacteria have in common with the cells of other living organisms?