describe the structure of a covalent molecular substance and describe the structure of a covalent network substance?​

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.

може ли да зареждате повече информация, моля

i think its 100.

hope this !