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A tighter built home means less outside air infiltrating in the home, which means less oxygen to use for combustion within the furnace. As the furnace burns fuel and oxygen for combustion, it "eats up" surrounding air, which has to be "made up" with fresh air. If air cannot type in the home as easily anymore, this can cause serious issues. As the surrounding air is utilized for combustion, rather than substituted with oxygen, a negative pressure inside the space can happen. This could create combustion problems for the furnace, plus burn up fresh air for anybody inside the home. Getting fighting fit Efforts are created to protect once abundant asiatic elephants.Elephants are threatened by poaching for tusks,from the decrease of habitat due to human pressure on forested areas and due to human conflict.The isolated populations of wild elephants in individual wildlife sanctuaries can also be threatened by decrease of genetic diversity.Recently several corridors connecting wildlife sanctuaries have been in existence to encourage the migration of wild elephants. The little actress came to be in 1999 in Bellerose, Queens. She was chosen to learn the role in the lion cub Nala in “The Lion King” by Walt Disney Theatrical in 2008. However, she was expected to quit the show following a way of leukemia was found maturing in their own body. Unfortunately, doctors were not able look for a match for the bone marrow transplant as a consequence of her multiracial backgrounds. Shannon\'s mother is African-American and her father is Hispanic, from your Dominican Republic.