Answer:
for example down syndrome or trisomy 21 is a common genetic disorder that occurs when a person has 3 copies of chromosome 21 there are many other promotional abnormality is including tunnel syndrome klinefelter syndrome
<span>humus; Increase..................................................</span>
<span>The answers you have provided here are correct - zero on a ph scale is very acidic, and 14 on a ph scale is very basic. Acidic and basic are the two furthest ends of the ph scale - so for example a ph of 7 would be neutral, but less than that is acidic and more than that is basic.</span>
The hole in the Ozone Layer
