19 chromosomes is prolly right.
An increase in the extracellular concentration of salts will cause body cells to swell.
Any molecules that exist as strings of the same or similar subunits<span> are called polymers;</span>starch<span>, proteins, and nucleic acids are all polymers, as are many artificial materials, such as plastics. Its a relatively easy way to build big molecules.</span>
80 to 100 BPM pending if they are a child and what their age is.