Based on the information given below, about how many trips around the milky way has the sun made since the emergence of life on earth? age of earth: 4.5 billion years first life on earth: 3.5 billion years ago orbital period: 250 million years orbital speed: 220 km/s distance to galactic center: 30,000 light-years a. 1.3 b. 5 c. 14 d. 18

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )

answer; coat color for blending in with dry grass;