40 points correct answer
why does hot air rise and cold air sink?

a ) cold air has more kinetic energy than hot air.

b ) hot air has more potential energy than cold air.

c ) cold air is more dense than hot air.

d ) hot air is more dense than cold air.

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u can delete ur account.

1. go on google and write

2 open this and click on your profile pic and if your profile is not appearing, then u have to log in.

3. when u click on your profile pic, there appears four options on the top.

4. click on the 1st option and scroll down and go at the bottom.

5. click on edit profile.

6. there appears a option 'prefernces' and at that option at the right side , 'edit' is written.

7. click on the edit option.

8. there is a option " i want to delete my account" and click on that.

hope this u

and ur welcm

: )