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Fish

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Subido el 13 de febrero de 2020 por Pedro G.

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what do fish look like we live on land and we are surrounded by air and they live in water they are 00:00:01
fish there is a wide variety of fish in multiple colors and different shapes but what do they all 00:00:15
have in common and how are they similar and different from us we will choose a 00:00:26
gilt-haired bream and a red mullet to find out materials a fish gilt-haired 00:00:33
bream red mullet kitchen board rubber gloves knife their bodies are perfectly 00:00:41
adapted to live underwater while you have skin and hair fish are covered in scales that isolate them 00:00:53
and protect them like a raincoat look at the head their eyes and mouth stand out the mouth 00:01:04
shows a set of sharp teeth humans breathe through lungs but our gilthead bream how does it breathe 00:01:15
can you see the openings on its sides inside are the gills fish use gills for breathing thanks to 00:01:24
them they can absorb all the oxygen dissolved in the water and how do fish move no matter how good 00:01:35
you are at swimming you will never swim like a fish for propulsion fish use a powerful tail 00:01:45
that ends in the caudal fin they use the other fins for stability now let's have a look at a 00:01:53
fish inside if we pull its muscles apart we find out that like us they have a skeleton made of a 00:02:06
spinal column and bones similar to our ribs if we do the same with the red mullet we will find out 00:02:14
that they are very similar inside the skeleton provides them with a frame and protects internal 00:02:25
organs each of these bones is a vertebra that is why the animals that have it are called vertebrates 00:02:32
Fish reproduce through eggs. They are aviparous, like reptiles, birds, and amphibia. On the other 00:02:41
hand, mammals are viviparous. To sum up, fish have vertebrae, therefore they are vertebrates. 00:02:58
Their body is covered in scales. 00:03:07
They have fin-shaped extremities. 00:03:10
They breathe through gills. 00:03:13
They are aviparous. 00:03:16
Subido por:
Pedro G.
Licencia:
Todos los derechos reservados
Visualizaciones:
98
Fecha:
13 de febrero de 2020 - 19:48
Visibilidad:
Público
Centro:
CP INF-PRI VICENTE FERRER
Duración:
03′ 28″
Relación de aspecto:
1.78:1
Resolución:
896x504 píxeles
Tamaño:
23.49 MBytes

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