Earth’s atmosphere, oceans, and continents began to form during the first several hundred years of (1 point) a. precambrian time b. the paleozoic c. the mesozoic era < - d. the cenozoic era 8. during the devonian period, animals that could live on land began to evolve. these animals still spent part of their lives in the water. what were these animals called? a. trilobites b. reptiles < - c. amphibians d. dinosaurs

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.