### Can you get a skull fossil in pearl?

Of course. You can get them in Diamond, Pearl, Platinum. Go underground using Explorers Kit found in Eterna City (digger man gives you it his house is next to Pokemon Center) then, if your trainer's ID is even, you find ONLY armor fossils. If it's odd, you find ONLY Skull Fossils. once you get the National Pokedex, though, they are reversed. Odd, Armor fossils, Even, Skull Fossils.

### Would you please cite examples where past tense and present perfect can't be use interchangeably?

The major such instance of which I am aware is when the verb is followed (or otherwise modified) by an adverb of long duration, as in "I learned that twenty years ago". "I have learned that twenty years ago" would sound distinctly odd if spoken at normal sentence speaking speed, but if there were a substantial pause after "that", as might be indicated by a dash in writing, it would not sound nearly so odd…

### Can a pearl be carved into a shape?

No, unfortunately. My girlfriend was born in November and the mineral of that month is pearl so I had to do some research on the subject. They do come in varying shapes though. Theirs essentially eight different shapes: round, semi-round, button, drop, pear, oval, baroque, and circled. ( baroque are the odd ones.)

### Can 5 odd numbers that if you add them make 32?

No. The sum of two odd numbers or two even numbers is an even number. The sum of an even number and an odd number is an odd number. The sum of 5 odd numbers is: ((odd + odd) + (odd + odd)) + odd = (even + even) + odd = even + odd = odd But 32 is an even number, therefore it cannot be the sum of 5 odd numbers.