Identify one purpose of the lens: it lets light in. it acts as a magnifying glass. it dilate the pupil. it sends signals to the brain.

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?

Hurry i need i will give brainliest

Read the poem "travel" by edna st. vincent millay. the railroad track is miles away, and the day is loud with voices speaking, yet there isn't a train goes by all day but i hear its whistle shrieking. all night there isn't a train goes by, though the night is still for sleep and dreaming, but i see its cinders red on the sky, and hear its engine steaming. my heart is warm with friends i make, and better friends i'll not be knowing; yet there isn't a train i wouldn't take, no matter where it's going. what is the central idea of this poem? the narrator is preoccupied by a desire to travel. the narrator spends many hours traveling by train. the narrator is frustrated by the noise of travelers. the narrator has fond memories of her travels.