Which statement best describes this passage? The author presents a problem the characters face and its solution. The author compares and contrasts two settings within the story. The author uses dialogue to introduce descriptive details to the reader. The author uses descriptive details to introduce a setting in the story.

Oceans produce approximately 80 percent of the oxygen our planet needs to support animal life. pollution that reaches the ocean through dumping, oil leaks, runoff, and other processes interferes with that oxygen production and poses a real threat to the oxygen content in our atmosphere. if the oxygen content decreases, it is likely that carbon dioxide will increase. this could have dramatic consequences for life as we know it. which does this passage indicate causes a decrease of oxygen in the atmosphere?