Which conclusion can be made about ocean currents from the activity? O Energy from the atmosphere causes convection of water, forming ocean currents.
O Surface wind change the density of water in the ocean, causing ocean currents to sink.
Ice found near Earth's poles add more salt to the ocean, forming ocean currents.
OHeat from Earth's interior creates pockets of warm air, causing ocean currents to circulate.

that tool would be a compass

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.