Light travels from the sun to the earth, a distance of 144,000,000,000 meters, in 480 seconds. calculate the approximate velocity of light in the direction it travels toward the earth.

What was the land like over 500 million years ago? what was under the sea?

2. how does the miller-urey experiment fall short of demonstrating that life can arise from inorganic molecules? explain. a. it doesn't show a leap between a collection of amino acids and a single-celled organism. b. it recreates the conditions that existed at the earth's beginning, but no molecules form as a result. c. it doesn't provide evidence of the formation of amino acids. d. it doesn't show how multicellular organisms developed from unicellular organisms

Restless tectonic plates move (shift) between one and fifteen centimeters per year month day minute