Excluding themselves from an activity they normally love
Answer:
A
Explanation:
that duration one lives from birth to the day of death is life expectancy
Bad hygiene, puberty, physical activity or just normal teenage bodily changes.
A) foods are physically broken down into smaller pieces!
your mouth brakes the food into small pieces and is the main part but chemical reaction also occurs,
the saliva in your mouth helps you swallow the food easily!
just imagine eating your food dry like doritos that will hurt! your saliva makes it a lot easier and painless!
Answer:
United States Environmental Protection Agency
Explanation: