taken, not shared.

What do you call a group of molecules bonded together?

well, the thing about large predators is that they leave an impact on an ecosystem big enough that you can tell they’re there, even if you never observe one directly. in this case, we know they’re definitely extinct because of the behavior of whales! whales used to max out at about 50 ft long and were fast and agile, entirely because of predation by megalodon!

but about 2 million years ago, our whales began to rapidly increase in size until we ended up with real monsters like the blue whale. this pretty directly lines up with the extinction of megalodon, and the removal of the pressure they were putting on large whale populations.

basically, large whales can get away with being gigantic, slow tanks in the oceans today because there simply isn’t a predator big enough to take them on anymore. if megalodon still existed, we would be seeing its impact on whale populations! whales would be smaller, and a hell of a lot more skittish than they are.

We begin to find giant shark teeth washing up on shore. People freak out. “Scientists find evidence megalodons never went extinct!”

Then the lead scientist calms everyone down so they can explain. “No. It’s worse than that. If they never went extinct, we would’ve found evidence like this before now. This means… ” Dramatically takes off glasses. 

a BOG is a wetland that is acidic

Some wolf puppies are unexpectedly willing to play fetch, according to scientists who saw young wolves retrieve a ball thrown by a stranger and bring it back at that person’s urging.

This behavior wouldn’t be surprising in a dog. But wolves are thought to be less responsive to human cues because they haven’t gone through thousands of years of domestication.

Exactly how dogs emerged from a now-extinct population of ancient wolves is a mystery. Wolves are large, dangerous carnivores, and yet they were the first animals that humans tamed. More than 15,000 years ago, when humans were still hunter-gatherers, this large predator somehow began cozying up to people, eventually becoming their “best friend.”

To try to get clues about how that happened, scientists such as Christina Hansen Wheat of Stockholm University in Sweden have been studying the differences between dogs and modern wolves. As part of her work, she raised litters of wolf puppies, feeding them and acclimating them to her presence but not playing with them or training them.

Fetching With Wolves: What It Means That A Wolf Puppy Will Retrieve A Ball