On one side the wind flows smoothly, but on the other side there are more wind currents in different directions. Which of Earth's spheres are interacting as the wind flows over the mountain? A.
atmosphere and biosphere
B.
geosphere and atmosphere
C.
hydrosphere and atmosphere
D.
geosphere and biosphere

a chemical reaction happens

explanation:

your mom.com . : 0000

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.