Study the timeline. Which statement indicates what the fossil record suggests about evolution on Earth?

Humans have only recently existed on Earth.
Organisms originally lived only on land.
Life on Earth started before water formed on Earth.
Multicellular life evolved before complex single-celled life.

Where does oxidative phosphorylation take place

Which of the following insects is a decomposer? a. mosquito. b. caterpillar. c. beetle. d. none of the above.

This is a 2017 topographic map of puerto rico in the united states, and i'm sorry that people there have suffered such a disaster. i want to ask, what do the yellow dots and areas represent on this graph? and the blue area and the little blue circle, and the little blue sign that looks like a signal tower, what do they stand for?