Most centipedes need to live in moist places, but a few can survive in deserts and dry grasslands. 1  These animals are found in the following types of habitat. 2  temperate. 3  tropical. terrestrial.  Terrestrial 1  Biomes. taiga.  desert or 1  dune. chaparral. 2  forest. rainforest. 3  scrub forest.  mountains.
Yeast are among the few living organisms that do not need oxygen in order to produce energy. This oxygen-independent state is called anaerobic (pronounced a-na-ROE-bik; without oxygen). During such anaerobic conditions, yeast convert carbohydratesâstarches and sugarsâto alcohol and carbon dioxide gas. This process is known as fermentation. The fermentation process of yeast is caused by enzymes, catalysts in chemical reactions similar to the digestive enzymes in the human body.
This makes yeast popular for making bread, beer, and wine, by using either the carbon dioxide or the ethanol from fermentation. Lactic acid fermentation is another form of anaerobic fermentation, and is commonly used by muscle cells during times of stress when not enough oxygen is available.his makes yeast popular for making bread, beer, and wine, by using either the carbon dioxide or the ethanol from fermentation. Lactic acid fermentation is another form of anaerobic fermentation, and is commonly used by muscle cells during times of stress when not enough oxygen is available.