The megaladon was technically stronger, as it could do more damage with a single action. Depending upon the size of the school of phirana, it might be able to do more damage as a group.
There is no standard collective noun specifically for piranhas. The general collective nouns for fish can be used, 'a school of piranhas' or 'a shoal of piranhas'.
Large group of piranhas can hunt otters and eat them.
Piranha's generally occur in small groups of about 20
There is no standard collective noun specifically for piranhas. The general collective nouns for fish can be used, 'a school of piranhas' or 'a shoal of piranhas'.
around 50 to 500
By attacking in a large group.
An adult anaconda will eat a piranha if it is a small group. A very large group would be too dangerous.
There is no specific timeframe as it would depend on the number of piranhas and the size of the prey. In general, if a group of piranhas were attacking a person, it could happen relatively quickly due to their sharp teeth and aggressive feeding behavior.
The east germanic language group
Yes, some of each group are becoming extinct
Dodos.
the dinosaurs became extinct because the was kill of there family