Manufacturers attribute the incidents to mechanical problems unrelated to the devices. Numerous safeguards are built-in, the manufacturers say. The devices won't shut down the engine while the vehicle is moving, and consumers can extend the car's operation in an emergency. Contracts spell out that the device is present on the vehicle.
an organism that lives and grows in the absence of molecular oxygen. facultative anaerobe. a microorganism that can grow with or without molecular oxygen. obligate anaerobe. an organism that can grow only in the complete absence of molecular oxygen.
SOIL AERATION: In most of the cases, living cells cannot survive without oxygen. As the roots contain a large number of living cells, they require considerable amount of energy for their metabolic activities and growth. So oxygen is absolutely essential for generating energy rich components by biological oxidative process. As mineral absorption ...