Name: A Colorful Quiz Show with Trace Dominguez | SciShow Quiz Show
Uploaded: 2020-03-30T07:10:28.000Z
Duration: 19 min 16 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

Hello and welcome to Cy Show, Quiz Show, Psychos.

Today on the program are two contestants will go head to head in a battle of brains On my left side, we have Hank Green, who managed to pry away from working on his second New York Times best seller.

Hoping to hand Hank another stunning defeat is traced.

Dominguez award winning video maker and creator and host of you know, dose of trace.

You might not be this time, so the show is not actually questions.

Oh, because it's a battle of literally our brain or skull when it falls over.

It's just to keep us apart a little bit because otherwise gets the whole body involved and surely just about the head I thought it might be for the shots.

Gore on the taping as a thank you to our supporters on Patriot.

We selected two of you, Random to win some prizes.

I'm gonna D'oh even promised to try very hard.

Show our players what they could go home with today.

Are you ready to find out about the prizes today?

Contestants today will be competing to acquire you both.

The winner of the show will receive an eye.

Once I show quiz show Pin, This fetching peace will have you feeling your best and will definitely start a lot of conversations.

But the loser of the show won't have to lament they'll be receiving the I lost sideshow quiz show pin.

This baby's in near mint condition and was hand pressed with love.

Now, luckily, both of you will get autographed final answer cards from the final round of today's show, and your packages will be filled to the brim with magical fairy dust that's invisible and in material, which really cuts down on the shipping costs.

I'll start both of you off with 1000 points.

Each time you choose a correct answer, you'll win some.

Um, since both of you have been making science videos for years, you have a lot of random science knowledge to drop us.

But who can put that knowledge to best use?

Today's competition might get heated, but it will always be pleasant compared to the natural world.

Uh, so the questions in this first round are all about how nature can be, as Tennison put it, red in tooth and claw, even when you might think it wouldn't be likes.

Lots of species look for safety in numbers, but the more of your comrades there are around, the more you have to compete with.

And scientists have found that it's actually quite easy to get some fish to go from friendly, too ruthless by doing one simple thing.

They can get most of a seemingly cooperative school of fish to single out an individual and chase them away.

What do they do to get these fish to turn on one another?

Pretend to be a predator searching for food?

Take away most of the fish is food or separate a large school into several smaller ones.

I'm going to say that you have to just take away their food and they'll turn on each other is incorrect.

I'm gonna go offer an especially tasty treat.

Thea Answer is a pretend to be a predator searching for food.

Lonely fish are more likely to end up his meals.

That's kind of the entire point behind schooling.

But it turns out that schooling fish aren't as all for one and one for all.

As you might think, schools are an example of what researchers call selfish herds.

Basically, everyone is part of the school because they want to maximize their own survival, not because they're altruistic and want to protect their fellow fish.

Scientists have found that it's not all that hard to push that selfishness from a passive behavior like schooling into an active behavior in this case, that active behavior is dooming one of their fellows by tracing them out of the school.

This is true for all kinds of fish, but in one species called to spot a sty an axe there's an added wrinkle.

The fish have an alarm pheromone in their skin that leaks out when they get injured.

This warren's other fish that there's a potential danger nearby.

But it also tells predators that there's an easy meal around, and amazingly, the fish seem to take advantage of this.

When scientists pretend to be a predator searching for food, the fish will intentionally injure one of their schoolmates, basically sacrificing it so that everybody else can escape.

What's especially interesting is that the fish don't do this when scientists mimic and ambush predator or a bird pecking from above.

Because in those cases the alarm smell doesn't help the predator pick up their meal.

So they only sacrifice their friends some of the time, which is nicer, I guess.

You know, they're like she's the weakest link or get Brad.

and it says here in this script, I guess that's why they say fish are cold blooded.

Anyway, the next species we're gonna talk about it definitely isn't cold blooded.

Unless you're talking about it's killing style.

Many mammal species that live in groups, set up territories where they can raise their young and forage in peace.

Anyway, In 16 year study, 47 females of this species were seen killing ground squirrels in their area.

But none of these animals were killed for food.

They were simply murdered, presumably so there would be less competition for resource is question is too, which usually harmless species to these fem fatales belong to Mare Cats.

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A Colorful Quiz Show with Trace Dominguez | SciShow Quiz Show

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