When the telomere becomes too short, the chromosome reaches a 'critical length' and can no longer be replicated.
Well I won't go to tooooooo much of that detail but the thing is FACT BY ME that everything around u is science and when u learn about ur surroundings it is science...!!!!
<span>Sponges possess the defense mechanism of releasing toxins that make a predator</span>
The answer would be both!