What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

It belongs to you, but other people use it more than you do. What is it?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

I taste better than I can smell. Who am I?

There is something which is always coming but never arrives?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

Two fathers and two sons went fishing one day. They were there the whole day and only caught 3 fish. One father said, that is enough for all of us, we will have one each. How can this be possible?

What do you answer even though it never asks you questions?

What can you catch but never throw?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?