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Of the more than 7,000 chemicals in tobacco smoke, at least 250 are known to be harmful, including hydrogen cyanide, carbon monoxide, and ammonia (1, 2, 5). Among the 250 known harmful chemicals in tobacco smoke, at least 69 can cause cancer. These cancer-causing chemicals include the following (1, 2, 5)
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Electric signals --> Nervous System
Chemical Signals --> Endocrine System
Nervous system made up of neurons
Neurons send messages using action potentials
Neurons pick up signal as its dendrites pass the signal down the axon into the axon terminals and into the synapses
Synapse drops neurotransmitters into the synaptic cleft
This signals neuron #2 to pass the message on
Hope that helps!!
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The first option and the last option
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More than half of those were the result of cheerleading activities. The National Center for Catastrophic Sports Injury Research study proved that cheerleading is certainly the most dangerous sport for women; more dangerous, in fact, than all the other women's sports combined.
Explanation:
Because Your doing Dangerous stunts... which can result in injury such as broken bones, strain, head injury's ect. :>
Dark greenish-brown or light greenish brown
