How does a change in the external pressure on a container of gas affect the volume?

A.
as external pressure increases volume increases.

B.
as external pressure increases volume decreases.

C.
as external pressure decreases volume decreases

D.
a change in external pressure has no effect on volume

Which of the following is a consequence of urban heat islands? increased precipitation downwind of the city? increased precipitation upwind of the city? decreased winds within the city? increased winds within the city?

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.

What element is able to combine with itself and hydrogen to form large molecules ?