brainliest if correct Direction For each stem encircle the letter of the correct answer 1. The primary chemical constituent of comets is Cmethane B nitrogen D. carbon dioxide 2 A meteor shower occurs when A a meteor is about to get married B the earth passes through the asteroid belt the head of a comet hits the earth's atmosphere D. the earth passes through a swarm of dust particles in space, the remnants of a comet, once a year 3. A meteorite is Aarock from space that strikes the ground B a piece of rock passing through the earth's atmosphere C the trail left by a piece rock as it passes through the earth's atmosphere D. all of the above 4. Most of the asteroids orbit the sun in a belt between the orbits of A. Venus and Mars C Mars and Jupiter B Mars and Earth D. Jupiter and Saturn 5. The asteroids are A miniature planets C. pockets of gas in the solar system B satellites of planets D. planets orbiting the stars other than the sun 6. Cornet tails are the result of A. interplanetary material streaming into the comet B. melting and evaporation of ice from the comet core C dust collected by the comet as it moves in its orbit D. solar wind blowing more gases from the central comet core 7. Why are meteorites and comets important in studying the origin of the solar system? A. They have recently formed themselves B. They are recently produced fragments of planets. C. They represent the material that formed the planets. D. None of the above 8. The orbits of most comets, which we see in the inner solar system A. are nearly circular C. never come closer to the sun B. are highly elliptical D. are only slightly inclined to the earth's orbit 9. Most meteoroids are formed when A cornets melted C. asteroids exploded or collided B. volcanoes erupted D. satellites exploded or collided 10. Meteors are A. falling stars B. signals from the other worlds C. solar wind particles captured by the earth's magnetic field D. luminous trails left by small extraterrestrial particles rapidly passing​