When bat habitats, called «hibernacula», are disturbed by noise, light or human contact, bats can use up critical amounts of energy, threatening their ability to survive the winter. (treehugger.com)
Then, site users vote on each product, and once the product hits the critical amount of «Likes,» the product goes into production. (inc.com)
Across the world, avalanche experts consider a daily new snow depth of 30 cm — whether wind deposited or freshly fallen — to be a critical amount that can increase avalanche risk. (sciencedaily.com)