Symptoms of a heart stroke are:
<span>~Face Dropping
~Chest discomfort (uncomfortable chest pressure, squeezing, fullness or pain, burning or heaviness)
~Discomfort in other areas of the upper body (neck, jaw, shoulder, arms, back)
~Shortness of breath
~Sweating
~Nausea
<span>Light-headedness</span></span>
(B) 2, 1, 19 ... is the answer
Concept 19 The DNA molecule is shaped like a twisted ladder. James Watson and Francis Crick solved the structure of DNA. Other scientists, like Rosalind Franklin and Maurice Wilkins, also contributed to this discovery.
