Answer:
ilankovitch cycles describe the collective effects of changes in the Earth's movements on its climate over thousands of years. The term is named for Serbian geophysicist and astronomer Milutin Milanković. In the 1920s, he hypothesized that variations in eccentricity, axial tilt, and precession of the Earth's orbit resulted in cyclical variation in the solar radiation reaching the Earth, and that this orbital forcing strongly influenced climatic patterns on Earth.
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Answer:
In the aftermath of the nuclear crisis in Japan, the country engaged in a massive cleanup. It cleared tons of debris, rebuilt roadways and bridges, and demolished and cleared out damaged buildings. In the future, plans should be in place for organizing citizens in cleanup efforts, making the streets safe during cleanup, and safely disposing of debris.
In addition, public transportation and airports need to function as soon as possible after such an event. Therefore, government staff should develop disaster-recovery plans for the most vital transportation systems. Local governments also need to provide short-term and longer-term housing for those who lose their homes. Designated shelters, such as schools or other community buildings, should be made ready for this purpose. Governments also need to help people get insurance payments, loans for rebuilding, and sound advice for where to locate new homes and how to strengthen them.
Answer:
That is much less often than in the last 150 million years, when the field has flipped every 600,000 years. In the last 10-20 million years it has sped up even more, to once every 200,000-250,000 years. "The evidence points to a more stable field in the very far past and fewer reversals," says Veikkolainen.
Oxygen was absent on earth
