N. Koreas Kim Jong Un claims there will never be an Imperialist invasion thanks to their nuclear weapons. Thoughts?
"Thanks to our reliable and effective self-defensive nuclear deterrent, there will no longer be war, and our country's safety and future will be firmly guaranteed forever."4 AnswersMilitary2 weeks ago
All scavengers occasionally kill their food, but with humans only those in the poultry industry tend to do the killing. Most people eat meat that has been dead for months! Most of us never eat a meal of an animal that we killed or hunted ourselves, not once! Even vultures do more killing than us.3 AnswersZoology2 weeks ago
In most Eurasian: elephantidae [like mammoths] died out, snow rhino [woolly rhino] died out, their hyenas, lions and bovines died out.
In N. & S. America almost all megafauna died out, even their wild horses died out!
In Africa only a few bovines and carnivores died out, but most everything else survived, why?2 AnswersZoology3 weeks ago
Mossosaurs evolved in the late cretaceous, after a mysterious mass extinction in the water killed off all ichthyosaurs and most pliosaurs. They only had a 20 million run from land to water.
Mossosaur body plan resembles that of early ichthyosaurs and early whales.
Early ichthyosaurs were not very shark-like, neither were early whales, both had flexible necks early on but not afterwards, both evolved caudal fin later in their evolution.
Mossosaurs still had flexible tails and only in the late cretaceous did they begin to evolve caudal fin.
Basilosaurus is an early whale, chaohusaurus is an early ichthyosaur.
Sadly it seems we never saw the ''finished product'' for the mossosaurs, but i have a feeling it would have been very shark/whale/ichthyosaur - like
It seems the only apex predators to go from land to water that took a different morphology were the pliosaurs, they were very turtle-like biomechanically though better suited for an aquatic life [live young].4 AnswersZoology4 weeks ago
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I understand a lot of small animals, like certain insect species, have had far more success proliferating and globalizing. However, i can not think of one megafauna species in history that has more success than our species?2 AnswersZoology3 months ago
you've been with him for 5 years, bought a house with him, traveled around the world with him, you are compatible. However, 5 years and he has not proposed to you for marriage. Would you leave him? You've asked him what's taking so long, but he just says he will but doesn't specify when.3 AnswersSingles & Dating4 months ago
Antarctica to become habitable and eventually the center of world commerce as a free trade zone.
Contless species extinct.
A lot of big animals alive thanks to zoo's.
Genetic engineering to change us.
Etc8 AnswersPhilosophy7 months ago
The biggest theropoda ever was maybe 10 tons.
The biggest ornithischians got as big as the biggest mammals on land ever, around 20 tons.
The largest Jurassic sauropods were about the same size of 20 tons.
However, in the Cretaceous some sauropods [and only sauropods] broke the scale at 2's, or 3x the natural weight limit for terrestrial megafauna which seems to be 20 tons throughout history.
Why?3 AnswersZoology9 months ago
How do you think the reign of mammals will end, and what do you predict may replace them as the new dominant megafauna?
66 million years is an ok reign. We also had a short reign in the Permian and Triassic.
Nothing lasts forever.4 AnswersBiology11 months ago
Did they use it to pierce and grasp, like in bird of prey, or like feline leg claws; to slice through flesh when grasping.5 AnswersZoology11 months ago
Mammals and birds are both about 150 million years old.
In the Triassic the therapsids got big, but from the Jurassic to the Cretaceous these animals bound to land did not get bigger then a badger! Not 1 species got bigger then a badger. NOT 1!
But during the entire Cenozoic [supposedly the age of mammals] we have big terrestrial birds, big mammals, big terrestrial reptiles like megalania, etc etc.
Jurassic and Cretaceous span 135 million years; PLENTY of extinction events and isolated faunas at the time yet it seems modern megafauna was extremely limited in their ability to radiate into more dominant niches, even though they were alive and thriving.
Why?2 AnswersZoology1 year ago
Anthony Joshua-2 AnswersBoxing1 year ago