Can y'all help me these questions its only 5 question

1: food is both mechanically and chemically digested

2. Stomach

3. the food must be digested

4. a supply of water and the removal of carbohydrates

5. 2nd one

for me i have felt invisible when i was clearly struggling,or,i made a great achievement ,and,nobody took to notice me either because they just didn't see it,or,people just turned their back on me.i can see a person being invisible by choice,or,without choice like i did.the people who are invisible by choice don't try to talk to people,don't try to make friends,and,keep to themselves.i haven't been one of those people so i couldn't give you a reason.

hope this and can i get bainliest my dude : d

the gravitational force on an object increase as the mass of an object also, im not going to report you, but this question should be under the science category, not health