Answer:
The answers are the second and fourth ones.
Explanation:
I did the assignment.
<span>The answers are the substances found in the
simple compounds of Hydrogen</span><span>, ammonia, methane and water and when they will undergo melting or boiling, there are weak
'intermolecular forces' that break them which is the reason why it is not a strong
covalent bond.</span>
Speciation<span> is the term used to describe the formation of a new </span>species<span> due to </span>natural selection<span>.</span>
Spermatogonia is my answer
Sodium bicarbonate and digestive enzymes.
