What is one way in which an ecosystem can affect a culture? O A. A lot of rainfall can lead to extensive plant life.
B. Cold waters increase the amount of dissolved oxygen.
O C. Earthquakes cause rocks to move and open up new areas for
nesting.
O D. A harsh environment can lead to a culture of hospitality.

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.