Solar eclipses occur about twice a year. but seeing a total solar eclipse is often described as a "once in a lifetime" experience. why is it so rare to experience a total solar eclipse?
total solar eclipses only occur once or twice a century
. the width of the moon's shadow is very narrow, so a particular area is very unlikely to lie along the path of totality during the eclipse.
total solar eclipses usually occur in late winter, when clouds are most likely to block the view.
if you aren't paying attention at the time, its very easy not to notice a total solar eclipse.

The correct answer is option B.

B) The width of the Moon's shadow is very narrow, so a particular area is very unlikely to lie along the path of totality during the eclipse.

Total solar eclipse is a very rare event to occur, This is called once in a lifetime experience because it is very difficult for the moon to cover the sun at a partial way, hence its very rare.

answer: national resource conservation services

national resource conservation services is the us. based approach that provides technical and financial assistance for natural resource management. nrcs society in conservation of resources by involving in activities like farmland protection, flood prevention, watershed protection, urban conservation, conserves economic and environmental conditions. it conducts soil surveys and implements the policy of natural resources management on the society.

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101