What is the main difference between sleet and hail? A. Sleet starts frozen then melts as it falls. Hail starts as rain and then freezes as it falls. B. There is no difference. C. Sleet freezes as it is falling down. Hail freezes, is swept up by wind, and refrozen several times before it falls. D. Sleet freezes when it hits the ground. Hail starts as snow and then turns to ice.

answer; i believe the correct answer is (solid gold);

it is b that is the answer.

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.