The word in the blank should be 'segregation' :)
Answer:
Viruses may be defined as the organisms that shows the border line between the living and non living organisms. Viruses can only replicate when they enter in the body of a particular host.
Viruses are pathogenic for humans and can cause deadly diseases like AIDS. The pandemic condition of virus mainly depends on the the matter of time. The appearance of the disease condition before the occurrence of the another disease.
<span>an explanation of a specific relationship
</span>
Answer:
What is the name of this website
or the book?
. I think that bivalves have evolved to have smaller head regions because they have also evolved to have bigger shells or valves than cephalopod