In the U.S. the largest amount of fossil fuel that is present is coal and oil.
White blood cells. (Leukocytes)
Non appreciating nowadays
The sympathetic nervous system is responsible for the reactions triggered on seeing a burglar. It is a part of the autonomic nervous system. The response triggered by the sympathetic nervous system is known as the 'fight-or-flight response'. This response is triggered in the situations of perceived threat, where the threat to one's survival occurs.
Hence, the answer is 'sympathetic nervous system'.
