Most of the information I gathered on Irken biology I got from here: michelle8936 with a . deviantart and . com and you should get it with this on the end) /#/d4wz67m And, credits to the people he also got some of his info on are in his own comments. :D WELL, sorry for posting the last chapter about FIVE times. Kept getting the credit link wrong…. WELL, here's part 2 of… well, part 2, heheh.

Dib was silent as he rode down to Zim's labs in the tube. It had been modified recently and easily fit the two of them with plenty of room to spare. When the elevator finally stopped Dib let Zim out first and followed him to a large computer room, all the while taking in the part of his lab he hadn't seen before. "WHOA!"

"Dib," Zim stated. Dib ran in after Zim, the doors automatically closing behind them. "You asked about the other three organs."

"Yeah, I did," Dib stated. "Tell me about your brain."

Zim sat in one of the chairs and Dib copied him. "The Irken brain, like the brains of many other animals and even a human, is located in the skull. It may be comparable to the brain of a hyuuman in complexity and function; but Zim assures it is still superior! It carries out the voluntary and non-voluntary functions like any brain would, but an Irken can live and function without our organic brain because the PAK is essentially our back up since it records everything and can also perform the same functions. Thanks to our nervous system, we can feel pain, cold, and heat like a human. But we can endure the cold better because of our planet."

"What about your.. what did you call it?"

"Squeedilyspooch. It is seen as one organ, but is sectioned off into various compartments that perform the jobs separate organs are responsible for in humans and animals. This means it is responsible as a whole for respiration, digestion, hormone distribution and circulation; those are the basics. We Irkens eat only junk food, so anything with a lot of sugar or anything that is considered unhealthy to a human is need for an Irken body to function. The Irken body maintains such a high metabolism, that every bit of food taken into the body is entirely…" Zim paused for a word, "…assimilated; therefore there is no waste because anything that is left over after digestion is sent to the PAK as power, as I said before. We can eat nearly anything because of the highly acidic fluid in the portion of the Squeedilyspooch that is used to digest food; one of the only exceptions are some of the spices used to season… MEAT."

"Your heart?"

"Serves the same purpose as a humans or animals; its purpose is blood circulation."

"Okay, then. Let me think…" Dib said. Zim held back a groan. Though he found the questions less of a hassle now, he still feared what Dib might ask. "Got it! Okay, so how do you repopulate?"

"Artificially," Zim said automatically. Seeing it wasn't in depth enough he continued. "We're known as Smeets when we come out of the tubes that grow baby Irkens underground Irk, in facilities we call Hatcheries. What we call Control Brains are used to regulate the DNA that's used to clone young Irkens, ensuring that the mixes taken from a number of host Irkens are completely random so each Smeet is different. Only a few seconds after being freed from the cloning tube, and a Smeet will receive its own PAK, which activates them thanks to a shock from a robotic arm. Said young Irkens are able to speak and move properly. Basically this means we didn't need parental care before we started cloning. Around two minutes after a Smeet's activation, they're guided to a room where all Irken knowledge is downloaded into their PAKs by the Control Brains. This doesn't involve military training and tactics. We spend the next ten years of our lives, and the remaining five years of our Smeethood learning these assets in special facilities. Once we reach five years of age, we're considered adults. But this doesn't mean we're done growing, just like how you humans keep growing after you are considered an adult if I'm informed correctly. It takes about ten years for an Irken to reach their full height. But your lack of gravity compared to Irks has caused me to grow more despite my age."

"You're… a clone?" Dib asked. Before Zim could confirm it Dib started u again. "All Irkens are clones? What, does no one have… sex there?"

Dib blushed deeply and Zim just looked at him. "What's… sex?" Zim asked. Dib's mouth fell open.

"Seriously? You're being serious right now?" he asked.

"Zim is always serious."

Dib smacked himself in the face. "Good LORD, Zim! NATURAL reproduction! That's what sex is!"

"Oh. Irkens are forbidden to do anything concerning that. We are only to be loyal to our Tallest. We're to have no loyalty to anyone or anything other than the Tallest and the Irken Empire."

"Why?" Dib asked. "Not to be rude or anything, but c'mon!"

"There are good reasons! It distracts us," Zim said. "But… there is something in the history about it as well. Though, I'm not telling you anything historical about Irk."

"What? Why? You've learned a lot about Earth's history thanks to school; I should know at least this!" Dib argued.

"…Fine," Zim agreed. "But only this. The law was put in action to ensure that loyalty to the Tallest was never put at risk. An Irkens first devotion should be towards the emperor, or emperors. Since the Irken parental instincts were too strong to overcome, the only way to prevent them was to stop them at the beginning and prevent them from taking root at all. Thus, DNA from every Irken is taken in a census and put into the data base to be mixed and make the DNA for Smeets. The Control Brains are the only ones allowed to use the system or even operate it. They ensure that no Smeet is the same DNA wise. And the DNA code of every Irken is recorded so it's never used again. No Irken has had.. any form of.. natural reproduction since the law was passed and the cloning process perfected."

"So do you even have the organs for it anymore?"

"I don't believe so. Since we don't produce waste anymore, the organs for that and reproduction were removed in the generation after that aspect of the PAK was perfected."

"…Are you sure there isn't ANY natural life left on Irk?" Dib asked.

"I have heard rumors of small, uncorrupted plots being rewarded to worthy Irken soldiers that have significantly contributed to the Irken Empire. But they are only seen by those they are given to."

"What's the weather like on Irk?" Dib asked. It was the only question he could come up with to keep an awkward silence from ensuing and he had to admit to himself it was still just as lame as if he was asking what the current weather was like.

"We have very harsh winters due to the distance from our sun and slow orbit. Irken winters are known to be extremely brutal. But the very hot Irken core body temperature and natural anti-freeze allows us to survive. In fact, the mild summers on Irk are known similarly as… what do you call them… cold snaps here on Earth."

"And that's a MILD summer. Wow. Okay, then, how hot IS your core body temperature?"

"What's a humans?"

"Below 100 degrees. If a human hits 100 or over we're considered sick and have a fever."

"An Irkens body temperature is usually over 100 degrees. The average, I believe, is 106."

"Wow! That's really warm, Zim."

"I'm aware, Dib-stink."

"So.. what's a Control Brain do?" Dib asked, completely disregarding any insult Zim gives him now.

"They are very important. On most, if not all Irk planets, there are five. The main three, which were also the originals, are known as the Triumvirate. They're on the Irken planet Judgementia. The five on every planet each have the memories of every Irken since the artificial PAK was introduced. The Triumvirate are the collective consciousness of all the Tallests. They're mostly in charge of encoding PAKs and informational imprint of Smeets. On rare occasions, they oversee court cases and are the judges and jury. I was one of those cas- Why am I telling you this? That wasn't even a question on Irken biology!" Zim raged. Dib leaned back, pushing the chair away from Zim.

"Sorry! Sorry! Not my fault you decided to answer me, sheesh," Dib grumbled. Zim growled, his antennae flat against his head. Dib tapped a finger on the chair and saw the one closest to him twitch. He didn't know why, but the antennae were his favorite feature of the aliens.

"…You're finally done asking?" Zim questioned. Dib spun in the chair.

"Well…. No. I have a lot more to ask, but…"

Zim looked up at him expectantly. Dib swiveled in the chair again. He turned the recorder off and left the chair toward the elevator. "I'll just come back later."

Zim watched him leave through the elevator and turned back around in the seat, his antennae slightly less flattened.

Okay. So, i'mma just leave it here for now. Dunno if I'll continue it, not sure where it could go, haha. It ain't no drabble anymore, though xD