The tissue that is affected during the process in which Platyhelminthes exhibit cephalization is the nervous system. <span>Cephalization is actually a process in which the nervous tissues get clustered towards the end of an organism. I hope that this answer has actually come to your help.</span>
Nitrogen and carbon are considered molecules
<span>it has a specific activation site for enzyme attachment</span>
The correct option is A.
Allopatric speciation is said to occur when a particular biological population of the same specie get separated from each other to the extent that their isolation prevent them from exchanging genetic materials with each other through reproduction. This type of speciation is also called geographical speciation because, the population usually get separated geographically with one been removed or restricted to a new location. This kind of separation of specie leads to the development of divergnet adaptations.
C) balance
Explanation: ruler shows length and the other 2 are used for liquids