Do more burpees +rep

first comment of april 11th, 2021 at 10:04pm

N U T

DON'T CARE, STILL BUYING CYBERPUNK 2077

Garry's ModificationGarry's ModificationGarry's ModificationGarry's ModificationGarry's ModificationGarry's ModificationGarry's ModificationGarry's ModificationGarry's ModificationGarry's ModificationGarry's ModificationGarry's ModificationGarry's ModificationGarry's ModificationGarry's ModificationGarry's ModificationGarry's ModificationGarry's ModificationGarry's ModificationGarry's ModificationGarry's ModificationGarry's Modification

Bro I didn't launch gmod

Garry's Modification

Garry's Modification

Garry's Modification

He s just a BONELESS MIDGET NIBBA

meem

please end my suffering

Never let anyone stop you from being you.

Have a nice week.

you did a good job today

Gay

BLUT UND EHRE

hate............

black............

you're*

BROOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOONK

Northern lampreys (Petromyzontidae) have the highest number of chromosomes (164–174) among vertebrates.[34]

Pouched lamprey (Geotria australis) larvae also have a very high tolerance for free iron in their bodies, and have well-developed biochemical systems for detoxification of the large quantities of these metal ions.[35]

Lampreys are the only extant verterbrate to have four eyes.[36] Most lampreys have two additional parietal eyes: a pineal and parapineal one (the exception is members of Mordacia)[37].

Lampreys provide valuable insight into adaptive immune systems, as they possess a convergently evolved adaptive immunity with cells that function like the T cells and B cells seen in higher vertebrates. Lamprey leukocytes express surface variable lymphocyte receptors (VLRs) generated from somatic recombination of leucine-rich repeat gene segments in a recombination activating gene-independent manner.[32][33]

Parasitic forms has given rise to the non-parasitic species,[29] and "giant" individuals amongst the otherwise small American brook lamprey has occasionally been observed, leading to the hypothesis that sometimes individual members of non-parasitic forms return to the parasitic lifestyle of their ancestors.[30]

Research on sea lampreys has revealed that sexually mature males use a specialized heat-producing tissue in the form of a ridge of fat cells near the anterior dorsal fin to stimulate females. After having attracted a female with pheromones, the heat detected by the female through body contact will encourage spawning.[31]

Tissue feeders can also involve the teeth on the oral disc in the excision of tissue.[19][20][21][22][23][24] As a result the flesh-feeders have smaller buccal glands as they don't require to produce anticoagulant continuously and mechanisms for preventing solid material entering the branchial pouches whoch could otherwise potentially clogging the gills.[25] A study of stomach content of some lampreys have shown remains of intestines, fins and vertebrae from their prey.[26] Although attacks on humans do occur,[27] they will generally not attack humans unless starved.[28][16]

The last common ancestor of lampreys appears to have been specialized to feed on the blood and body fluids of other fish after metamorphosis. They attach their mouthparts to the target animal's body, then use three horny plates (laminae) on the tip of their piston-like tongue, one transversely and two longitudinally placed, to scrape through surface tissues until they reach body fluids. The teeth on their oral disc are primary used to help the animal attach itself to its prey. The teeth have a hollow core to give room for replacement teeth growing under the old ones. Some of the original blood-feeding forms have evolved into species that feed on both blood and flesh, and some who have become specialized to eat flesh and may even invade the internal organs of the host.

The unique morphological characteristics of lampreys, such as their cartilaginous skeleton, suggest they are the sister taxon (see cladistics) of all living jawed vertebrates (gnathostomes), and are usually considered the most basal group of the Vertebrata. Instead of true vertebrae, they have a series of cartilaginous structures called arcualia arranged above the notochord. Hagfish, which resemble lampreys, have traditionally been considered the sister taxon of the true vertebrates (lampreys and gnathostomes)[16] but DNA evidence suggests that they are in fact the sister taxon of lampreys.[17]

Studies have shown that lampreys are amongst the most energy-efficient swimmers. Their swimming movements generate low-pressure zones around their body, which pull rather than push their bodies through the water.[18]

Adults superficially resemble eels in that they have scaleless, elongated bodies, and can range from 13 to 100 cm (5 to 40 inches) in length. Lacking paired fins, adult lampreys have large eyes, one nostril on the top of the head, and seven gill pores on each side of the head. The pharynx is subdivided; the ventral part forming a respiratory tube that is isolated from the mouth by a valve called the velum.

This is an adaptation to how the adults feed, by preventing the prey's body fluids from escaping through the gills or interfering with gas exchange, which takes place by pumping water in and out of the gill pouches instead of taking it in through the mouth. Near the gills are the eyes, which are poorly developed and buried under skin in the larvae. The eyes complete their development during metamorphosis, and are covered by a thin and transparent layer of skin that becomes opaque in preservatives.[14] Their teeth consist of a meshwork of keratin filaments and other proteins.[15]

Distribution may also be adversely affected by dams and other construction projects disrupting migration routes, obstructing access to spawning grounds. Conversely, the construction of artificial channels has exposed new habitats for colonisation notably in North America where sea lampreys have become a significant introduced pest in the Great Lakes. Active control programs to control lampreys are undergoing modifications due to concerns of drinking water quality in some areas.[13]

Lampreys live mostly in coastal and fresh waters, although some species (e.g. Geotria australis, Petromyzon marinus, and Entosphenus tridentatus) travel significant distances in the open ocean,[10] as evidenced by their lack of reproductive isolation between populations. Some species are found in land-locked lakes. They are found in most temperate regions except those in Africa. Their larvae (ammocoetes) have a low tolerance for high water temperatures, which may explain why they are not distributed in the tropics.

Lamprey distribution may be adversely affected by overfishing and pollution. In Britain, at the time of the Conquest, lampreys were found as far upstream in the River Thames as Petersham[citation needed]. Reduction of pollution in the Thames and River Wear has led to recent sightings in London and Chester-le-Street.[11][12]

There are about 38 known extant species of lampreys.[4] "Parasitic," carnivorous species are the most well-known, and feed by boring into the flesh of other fish to suck their blood;[5] but only 18 species of lampreys engage in this lifestyle (more correctly known as "micro-predation"[6]).[7] Of the 18 parasitic species, nine are anadromous (some of them also have freshwater populations), and nine live exclusively in freshwater. Also all the non-parasitic forms are freshwater species.[8] Carnivorous lampreys also attach themselves to larger animals to get a free ride.[9] Adults of the non-carnivorous species do not feed; they live off reserves acquired as ammocoetes (larvae), which they obtain through filter feeding.

Lampreys (sometimes also called, inaccurately, lamprey eels) are an ancient lineage of jawless fish of the order Petromyzontiformes, placed in the superclass Cyclostomata. The adult lamprey may be characterized by a toothed, funnel-like sucking mouth. The common name "lamprey" is probably derived from Latin lampetra, which may mean "stone licker" (lambere "to lick" + petra "stone"), though the etymology is uncertain.[3]

booooiiii im finna getchu

The devilish mischievous child, the bad seed.

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Nasty

:D perfect

something nasty

Yes, my proudest moment.

https://www.youtube.com/watch?v=iptUNUFdyas nice job man!

Hey, D.wright! What's up, man? It's Jeff from Psychology 100 last semester. I didn't know you were some kind of internet superstar hahahaha. Hit me up, man. Btw, did you ever hook up with Ashley? She was a big girl hahah. You are such a dog. It's so cool to see you again. You have my numbah. Just hit me up, man. .

literally the gayest avatar ever what a ♥♥♥♥♥♥♥ ♥♥♥ lmaoing @ ur life

the ice..... its so ♥♥♥♥♥♥♥ thin......

Something nasty

Argentina el mejor pais

something nasty

#autismawarenessmonth

spammer