Mars ?
Its diameter is less than
one-half the length of
Earth's diameter.
Mercury
?
Its atmosphere contains
thick clouds of sulfuric
gas.
Earth
?
Its atmosphere is mostly
nitrogen.
Venus
?
It experiences large dust
storms.

The air is going to come out because of the low pressure.

According to arrhenius theory of acid and bases, an acid is a proton donor, while base donates hydroxyl ions. further, acid and base reacts to form salt and water.consider following example.hcl    +      h2o          →      cl-          +      h3o+here, hcl has donated a proton, hence it is an acid.now consider following reactionhcl      +      naoh            ↔      nacl      +        h2oin this reaction, hcl donates proton, hence it is acid. on other hand, naoh donates hydroxyl ion (i.e. hence it is a base.