Name: 由真正的恐龙制成的塑料恐龙是（Are Plastic Dinosaurs Made from Real Dinosaurs?!）
Uploaded: 2021-05-13T11:52:30.000Z
Duration: 2 min 46 s
Description: 【看影片學英語】數萬部 YouTube 影片，搭配英漢字典即點即查，輕鬆掌握單字發音與用法，長久累積看電影不必再看字幕。

Here's a fun connection that people on the internet like to make:

關係子句

plastic is made of oil, and oil is made of dinosaurs,

so when you're playing with plastic dinosaur toys,

you're basically playing with the remains of real dinosaurs.

It's fun to think about but it's not that simple.

For one thing, oil and natural gas that we pump out of the ground

are not the chemical leftovers of dinosaurs.

Instead, they're made from the ancient remains of a whole bunch of much smaller creatures.

The internet might want you to think that oil equals dinosaur corpses,

but the fact is that the petroleum we use to make plastics actually comes from ancient ocean floors,

But those ocean waters did and still do support a mind-bogglingly

huge mass of tiny microorganisms, plants, and animals.

And not all that biomass gets eaten by bigger creatures.

Some of it dies and trickles down through the ocean as so-called marine snow,

a sort of perpetual rain of organic matter that falls to the seafloor.

If enough of this material builds up faster than it decays,

then you wind up with a layer of organic goo at the bottom of the ocean.

After a while, the goo can get buried under sand and other sediment

and then time, pressure, and heat turn that organic layer into oil and natural gas.

Changes in sea level and the movement of the Earth's crust

sometimes force those old ocean floors to the surface,

which is why some oil and gas reserves are found on dry land,

but others are still underwater like in the Gulf of Mexico.

And there's one more twist to the plastic equals oil equals dinosaur story:

The main precursor to plastic is a byproduct of petroleum refining

They're made of relatively light carbon compounds

that can be condensed out of natural gas by cooling it.

These compounds are used in the chemical reactions that we use to make plastic.

And in the United States they're the source of most of the plastic that's made.

So in the end, oil and natural gas come from the same place,

where countless billions of tiny animals, plants, and microorganisms

wound up, so that your kid could play with their plastic t-rex.

Whether you choose to explain that to them is totally up to you.

Thanks for watching this episode of SciShow

and thanks to all our patrons who keep these answers coming.

If you'd like to submit questions or get some videos early

and don't forget to go to YouTube.com/SciShow and subscribe.

Hank: ...bowling ball to the head suddenly Fred Flinstone can't remember who he is,

another bonk and everything goes back to normal.

It makes for some Pleasant cartoon hijinks, but in reality concussion induced amnesia...