I thought I had read something about this, but I can’t find a source, so take this with some salt.
Even big cats chitter, and while sometimes there’s a social aspect where other cats are alerted to the hunt, not all big cats hunt in groups. So I think they chitter to warm their jaws up. Like streatching before exercising, or the jitters you get from adrenaline, the rapid movements ensure they can bite at maximum strength quickly, and without pulling a muscle.
Technically, this is processed cake. Yellow cake that is.
As a Canadian, I share your confusion. I think that phrase was just a common descriptor of mitochondria in US textbooks, or a catchy line in a popular US biology video.
It’s just strange enough to make a big impression on bored students, so I’m not surprised it’s been memed so hard.
This isn’t learned behaviour though. The kites tried eating the invasive snails immediately, but they were too large to be cracked by their beaks, being two to five times larger.
The change to eating the larger non-native snails was facilitated by larger beaks seen in the years after the invasion.
It seems like the local applesnail had a crash due to drought in the early 2000’s (partly caused by the draining of wetlands for development), and the invasive island applesnail was first seen in 2004. There are even more species of invasive snail now, but the opportunity likely arose because of a population crash.
The fittest in this case are the kits that can eat the snails they find, not by being less picky, but by having larger beaks.
Evolution is just the change in allele frequency of a population over generations. This includes 90% of the population dying before they figure out new food.
Cats were originally used for their curiosity, but training hamsters and eventually parakeets led to much smaller machines.
By that argument, most of these should be black.
Selecting one wavelength are discarding all the others, and sometimes shifting that wavelength to a more convenient hue is great for science, but feels like cheating when looking for a specific colour.
It’s like looking for pictures of red cars, and getting a car that’s 90% rust, a picture taken in a forest fire, and a picture taken through red-tinted glass.
Hey! I’m using one of those devices!
Or just that it needs to focus on from of itself like filter crabs, or that it needs to see through things like kelp forests or hole enterances.
Given it’s size and the extreme binocular vision, it’s unlikely to have any ambush predators.
I looked it up, it has bony plates all over it’s body and likely a lateral line, so seeing predators directly may have been less necessary. It was also a suction feeder, so likely an active predator of much smaller things. It may have needed good forward vision because it’s maneuverability was poor.
I’d argue that we can’t do a resurrection because that’s really complex, not because we don’t know how.
I’ll also point out that there are people alive today who were declared medically dead that live normal lives because we made their heart beat again.
Rock paper scissors is so childish, upgrade to Boulder Book Jaws!
Hydraulic press?
So it’s like chewing cud, except it’s multiple passes of the same stomach instead of different stomachs.
TL;DR: Beaks are a lot lighter and more easily adapted than teeth.
They aren’t insects, but most arachnids have book lungs, which are basically a pocket full of air gills.
Legolas can also tell that they carry spears and their leader is taller than average. Spectral information is unlikely to tell him that.
It’s kind of a thing in certain animals, but not wolves like originally claimed. The certain animals here being mostly primates, so it’s even more applicable.
That said, the politics of social primates are notoriously complex and many cultures have unique behaviors within the species, so there aren’t really any universal rules particularly among the most social groups.
“You like pets? Name every pet!”
“Eukaryota”