<span>Unit train cargo uniformly goes from location A to B, while mixed train cargo is mixed in delivery, from point A to B, but also A to C, etc. Unit trains are more efficient because no extra time is needed to detach cars to send to other locations.</span>
Amino acid<span>, </span>any of a group of organic molecules that consist of a basic amino group (−NH2<span>), an acidic carboxyl group (−COOH), and an organic </span>R<span> group (or side chain) that is unique to each amino acid. </span>
Any astronomical body that revolves around a larger body is called SATELLITE. <span>There are two basic types of satellite, natural and artificial satellites. Natural satellites are those that occur naturally such as the moon and the earth while artificial satellites refers to man made satellites. Man made satellites are usually designed for collection of data and for communication. Artificial satellites have the ability to collect more information in a very short time compared to ground instruments. There are many different types of artificial satellites in space.</span><span />
