growing and winemaking process can either lessen or increase the expression of terroir in the wine. These include decisions about pruning, irrigation and selecting time of harvest. At the winery, the use of oak, cultured or ambient yeast, length of maceration and time in contact with lees, temperature during fermentation, and processes like micro-oxygenation, chaptalization, clarification with fining agents, and reverse osmosis all have the potential to either reduce or emphasize some aspect derived from the terroir. Winemakers can work between the extremes of producing wine that is terroir-driven and focused on purely expressing the unique aspects of a region's terroir, or winemaking that is done without any consideration given to terroir. Furthermore, aspects of terroir such as climate and soil type may be considered when deciding such things as which grape variety to plant if the goal is to make good wine rather than terroir-driven wine. The importance of these influences depends on the culture of a particular wine region. In France, particularly Burgundy, there is the belief that the role of a winemaker is to bring out the expression of a wine's terroir. The French word for "winemaker," vigneron, is more aptly translated as "wine-grower" rather than "winemaker". The belief that the terroir is the dominant influence in the wine is the basis behind French wine labels emphasizing the region, vineyard, or AOC more prominently than the varietal of grape, and often more prominently than the producer. Impact of climate change As climate change disrupts long-established patterns of temperature and precipitation in wine-growing regions and causes more extreme weather events, there are potential serious impacts on terroir and the wine industry. Hotter temperatures and an earlier growing season can push berries towards a higher sugar content, less acids and differences in secondary compounds that are important for aromas. Growers are attempting to adapt in a variety of ways in response. In 2021, in a controversial move, the French National Institute for Agriculture, Food and Environment formally authorized wine producers in the Bordeaux region to experiment on a trial basis with four red and two white vine types selected from other areas of France. The new types can make up no more than 10% of the final wine blend. The rest must be from the six red and eight white grape varieties traditionally cultivated in the region during its 2,000 year history. Another approach to protecting plants against the