Answer:
I don't know, but maybe because they possibly aren't allowed on other apps, or they are banned.
Explanation:
Drawings were done on stone
In a four-stroke internal combustion engine, the gas vapor/air mixture is pressurized during the compression stroke. Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
To distract from other actions.
Hope it helps
