<span>More than 50</span>. There are more than 7000 chemicals in cigarette smoke, 250 of which are known to be detrimental to health and 69 chemicals are carcinogenic (can cause cancer). Some of the carcinogenic chemicals in cigarette smoke are: Arsenic, Cadmium, Chromium, Formaldehyde and Nickel.
In an atom, the number of protons is almost always equal to the number of electrons
It’s true (a) because bones become brittle and easier to break if theyre not used. bones more frequently used become stronger.
Axon, dendrite
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<span>A measure of subcutaneous fat at various body sites using special calipers is: tomography which is consider to be the gold standard. the purpose of studying this fact was to compare skinfold caliper and ultrasound measurement of subcutaneous body. Subcutaneous fat thickness of 26 young males was measured at eight sites using a commercial high-resolution B-scan ultrasound equipment.</span>
