In archaeology, a biofact (or ecofact) is any organic material including flora or fauna material found at an archaeological site that has not been technologically altered by humans yet still has cultural relevance. Biofacts can include but are not limited to plants, seeds, pollen, animal bones, insects, fish bones and mollusks. The study of biofacts, alongside other archaeological remains such as artifacts are a key element to understanding how past societies interacted with their surrounding environment and with each other. Biofacts also play a role in helping archaeologists understand questions of subsistence and reveals information about the domestication of certain plant species and animals which demonstrates, for example, the transition from a hunter-gatherer society to a farming society. Biofacts are differentiated from artifacts in that artifacts are typically considered anything purposefully manipulated or made by human art and workmanship, whereas ecofacts represent matter that has not been made or deliberately influenced by humans yet still has cultural relevance. Biofacts reveal how people respond to their surroundings. There are many different ways that biofacts can be preserved, including through carbonisation, waterlogging, desiccation and mineralization. There are also varying methods of recovering them depending on the location in which they were found. There are a large variety of biofacts that have the potential to give insight into how civilisations operated in the past. Plant remains are a common and key ecofact that provide an importance source of information because they can be used to reconstruct the way past societies have interacted with their environment. By studying plant remains, especially those that were used in the economy and the changes in their use over time, researchers known as archaeobotanists can understand what changes occurred in activities such as cultivation, consumption and trade from the past.