A little under 50 percent of calories should be fat
i think the awnser is nutrition facts i really hope this helps ;)
Don't download unsafe programs , because many contain viruses.
Start and Shut down your computer/laptop properly.
Likely the chronological age, mainly because it would explain the differences in puberty stages between the two boys, which is an example of physical maturation.
It can change your health by burning calories or being fit.
