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Geography, 22.06.2019 06:40
Seed plants that lived during the carboniferous impact life on earth today because a. they are the ancestors of all plant life on earth. b. their remains formed coal, which is an important resource. c. they produced fossils that are used to date many geologic events. d. their presence caused oxygen levels to drop, allowing animals to evolve.
Answers: 3
Geography, 22.06.2019 19:10
One of the brightest comets of the 20th century was comet hyakutake, which passed close to the sun in early 1996. the orbital period of this comet is estimated to be about 30,000 years. find the semi-major axis of this comet’s orbit. compare it to the average sun-pluto distance and to the distance to alpha centauri, the nearest star to the sun, which is 4.3 light-years distant.
Answers: 3
Geography, 23.06.2019 01:30
In the late 1990s, brazil’s poor people protested about crowded cities land distribution mining permits industrial pollution
Answers: 1
The weakening of rock due to expansion and contraction resulting from temperature changes is known a...
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