Why did the author of "Classifying Animals " MOST LIKELY include the Venn diagram? Group of answer choices

To show readers how the text is organized.

To help readers find the meaning of words they do not understand.

To help readers understand how plants are classified.

To help readers learn the similarities and differences between vertebrates and invertebrates.

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.