Select the correct answer. which of these elements is rarely found in organic molecules? a. hydrogen b. oxygen c. barium d. carbon

Babies with very low or very high weight are less likely to survive .

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.

Which of the following typically characterizes a tropical rainforests