When Jane visits a beach, she notices a sea stack has formed offshore. Which of the following best describes what caused the sea stack to form? a)Erosion hollowed out the rock in a seaside cliff.
b) Deposition moved sand from the beach into an offshore pile.
c) A large number of shells were carried out to sea by the waves.
d) A rocky section of the beach was eroded by the sea, leaving behind a protruding rock formation surrounded by water.

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.