Transfer RNA and amino acids
Bird vocalization is often a mating behavior; however, bird vocalization can be used to warn other birds if danger is nearby, or for other means of communication.
If water had no density - if its mass per unit volume were zero - it would be massless, and would travel at the speed of light.
The oceans would all go in all directions (leaving sea-dwelling flora and fauna behind - and all the salt).
You wouldn't see rain coming (at least, not directly at you), because the image of the rain would travel no faster than the rain itself.
<span>And water pistols would essentially be laser guns.</span>
When an ammunition malfunction occurs, who is responsible for determining if the ammunition can be moved safely? When unit personnel discover an ammunition malfunction on the training field, who is responsible for calling a cease fire. Who is responsible for generating an automated DA Form 3151-R?