In your own word briefly compare and contrast the possible environmental impacts of mining underwater volcanoes versus land based volcanoes

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.

In the following diagram, four different index fossils are labeled: which of the labeled fossils comes from the oldest organism? a b c d

Sink holes may eventually for to join a. wide valleys b. zone of aeration c. dripstones d. aquifer