El niño is best described by which of the following situations?

a) unusually cool ocean temperatures

b) unusually cool air temperatures

c) unusually warm air temperatures

d) unusually warm ocean temperatures

Look at the images of different rocks. which rocks have a fine-grained texture? check all that apply. 1 2 3 4 5

The buildup of sediments where a river empties into a slow-moving or nonmoving body of water is known as a/an

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.