All gasoline inboard engines must have a backfire flame arrestor on each carburetor. what does this device prevent

Three out of five seniors remain undecided about a college major at the end of their senior year.

While preforming before operation pmcs, you notice the front right tire appears slightly under-inflated. what is the proper action?

The camera still is bad even with the new iphone xr and especially in low light it is even worst because you can see the pixels more if its in low light. if all you apple customers want apple to fix this then lets fill there feedback with complaints about the can apple do to fix this issue?