Photosynthesis is an important biochemical process in which plants, algae, protistans, and some bacteria convert the energy of sunlight to chemical energy and store it in the bonds of sugar, glucose. Ultimately, nearly all living things depend on energy produced from photosynthesis for their nourishment, making it vital to life on Earth. It is also responsible for producing the oxygen that makes up a large portion of the Earth's atmosphere. Organisms that produce energy through photosynthesis are called photoautotrophs. Plants are the most visible representatives of photoautotrophs, but it should be emphasized that bacteria and algae as well contribute to the conversion of free energy into usable energy.

Alpaca fiber is warmer than sheeps' wool and lighter in weight. It is soft and luxurious and lacks the "prickle" factor. However, as with all fleece producing animals, quality varies from animal to animal, and some alpaca produce fibre which is less than ideal.

In the 18th and 19th centuries, the four South American camelid species were assigned scientific names. At that time, the alpaca was assumed to be descended from the llama, ignoring similarities in size, fleece and dentition between the alpaca and the vicuña. Classification was complicated by the fact that all four species of South American camelid can interbreed and produce fertile offspring. It was not until the advent of DNA technology that a more accurate classification was possible.

Alpacas are social herd animals and should always be kept with others of their kind. They are gentle and elegant, inquisitive and observant. As they are a prey animal, rather than a predator, they are cautious and will understandably be nervous if they feel threatened. They like their own space and don’t appreciate another alpaca (or human) getting too close, especially from behind. They will warn the intruder away by threatening to spit, or by spitting, or by kicking. Some alpacas kick, some don’t – but yes, they all spit.

Alpacas have been domesticated for thousands of years, and originate from Peru, Chile and Bolivia. There are no wild alpacas; it is believed that they are descended from the vicuna, which is also native to South America. They are closely related to llamas, which are descended from the guanaco. These four species of animals are collectively called camelids.