All the elements in one group have the same number of valence electrons.
A diet rich in vegetables and fruits can lower blood pressure such as eating healthy
Answer:
2, stronger hydrogen bonding
Explanation:
<span>Biological specimens have been preserved in alcohol and formalin for many years.This could damage the specimen and change the colour of the fluid.Engineered fluids are now used as a substitute for formalin as it is a more sustainable medium..Novec fluids which are low in toxicity are also used.</span>