Need more information to complete the question. Which book is this?
Billund Denmark is leading LEGO company today
Vestigial usually refers to traits which over evolution have lost their main function and are less useful than they once were.
In number one Hunter means that he thinks the teeth were from the ancestor whale shark but are now useless or nearly useless to the current whale shark.
I think its 3. "ill be glad to come to ur house tmr" thats when theyre coming