Astronomers detect a large asteroid that's far away but still heading toward earth at 754 m s . a straight trajectory would bring it within 3.3 × 108m of the earth (about the orbit of the moon). however, the earth's gravitational attraction will pull it closer towards the earth. is there cause for alarm?

Why would the crystals in an intrusive igneous rock be larger than the crystals in a chemical sedimentary rock? a. intrusive rocks form beneath the earth's surface, so they cool very slowly, which produces larger crystals. b. chemical sedimentary rocks form from dissolved substances on the earth's surface with very high heat and cool very slowly, which produces smaller crystals. c. chemical sedimentary rocks and intrusive rocks have crystals of the same size. o d. chemical sedimentary rocks form deep in the earth, so they cool slower, which produces small crystals. € read question correct:

Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks

Chris lives in a city that experiences heavy rainfall with average annual precipitation of 882 millimeters. it is warm all year. mark lives in city with an average annual rainfall of 40 millimeters. it has hot summers and cool winters. chris's city is in a climate, while mark's city is in a climate.