Shadowing Practice: Carbon Dioxide – Oxygen Cycle - Learn English Speaking with Video
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Every breath you take connects you to one of Earth's most important cycles, the carbon dioxide oxygen cycle.
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It's like our planet has its own breathing system, and it's happening all around us, every single day.
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Here's how it works.
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Humans and all land animals breathe in oxygen and breathe out carbon dioxide into the air.
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The same thing occurs for marine animals, like fish.
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But this exchange of gases occurs in water.
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But where does all that fresh oxygen come from?
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And what happens to all the carbon dioxide we release?
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The answer is photosynthesis, nature's amazing recycling system.
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On land, plants are like oxygen factories.
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Using the sunlight's energy, they take in the carbon dioxide that animals breathe out.
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Combine it with water from the soil to create glucose, basically plant sugar that feeds them.
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The incredible part?
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As they make their food, they release oxygen as a bonus gift to the rest of us.
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But here's what might surprise you.
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Most of our oxygen doesn't actually come from forests or land plants.
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It comes from the ocean.
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Tiny plant-like organisms, called phytoplankton, float throughout our oceans by the billions.
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They're so small, you need a microscope to see them.
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But they're photosynthesis superstars.
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These microscopic ocean plants work the same way as land plants,
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using the energy of sunlight and taking in carbon dioxide and water from their surroundings,
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to make food, and pumping out oxygen in the process.
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And because there are so many of them covering our vast oceans, phytoplankton produce about half of all the oxygen on Earth.
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This creates a perfect cycle.
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Animals use oxygen and produce carbon dioxide.
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Plants and phytoplankton use that carbon dioxide and produce oxygen.
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It's been working this way for millions of years, keeping our atmosphere balanced and our air clean to breathe.
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Thank you.
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Vocabulario y notas de pronunciación para esta lección
Este vídeo tiene 29 frases y 308 palabras para practicar shadowing. La parte hablada dura 2:46. El hablante mantiene un ritmo constante de unas 111 palabras por minuto, cómodo para el shadowing. Solo el 80 % de las palabras está entre las 3.000 más comunes del inglés, por lo que el vocabulario es exigente.
Vocabulario clave de este vídeo
15 palabras del vídeo que vale la pena aprender, con su pronunciación y significado:
| Palabra | Pronunciación | Significado |
|---|---|---|
| oxygen sustantivo | /ˈɑksɪd͡ʒən/ | oxígeno |
| dioxide sustantivo | /daɪˈɑksaɪd/ | dióxido |
| breathe verbo | /bɹiːð/ | respirar |
| occur verbo | /əˈkɜː/ | ocurrir |
| vast adjetivo | /væst/ | vasto, enorme |
| atmosphere sustantivo | /ˈætməsˌfɪɹ/ | atmósfera, aire |
| bonus sustantivo | /ˈbəʊ.nəs/ | bonificación, plus |
| soil sustantivo | /sɔɪl/ | suelo, tierra |
| connect verbo | /kəˈnɛkt/ | conectar, empalmar |
| pump sustantivo | /pʌmp/ | bomba, pompa |
| combine verbo | /kəmˈbaɪn/ | combinar, juntar |
| float verbo | /fləʊt/ | flotar |
| sunlight sustantivo | /ˈsʌnˌlaɪt/ | luz del sol, luz solar |
| superstar sustantivo | /ˈsuː.pəˌstɑː/ | superestrella, superstar |
| surroundings sustantivo | /səˈɹaʊndɪŋz/ | entorno |
Pronunciación a tener en cuenta
El hablante usa 3 contracciones y formas reducidas, como they're, doesn't. Dilas en su forma corta, tal como las oyes.
- Los sonidos de “th”: breathe /bɹiːð/, photosynthesis /ˌfoʊ.toʊˈsɪn.θə.sɪs/
- Palabras largas — cuida el acento: organism /ˈɔɹ.ɡəˌnɪz.əm/, phytoplankton /ˌfaɪ.təˈplæŋk.tən/, photosynthesis /ˌfoʊ.toʊˈsɪn.θə.sɪs/, microscopic /ˌmaɪ.kɹəˈskɑ.pɪk/
Cómo practicar con este vídeo
- Escucha el vídeo entero una vez sin hablar y anota las palabras que no conoces.
- Haz shadowing frase por frase a velocidad normal, repitiendo cada una hasta que tu ritmo coincida con el del hablante.
- Grábate y compara con el original, prestando atención a palabras como oxygen, dioxide, breathe.
¿Qué es la Técnica de Shadowing?
Shadowing es una técnica de aprendizaje de idiomas respaldada por la ciencia, desarrollada originalmente para la formación de intérpretes profesionales y popularizada por el políglota Dr. Alexander Arguelles. El método es simple pero poderoso: escuchas audio en inglés nativo y lo repites en voz alta de inmediato, como una sombra que sigue al hablante con solo 1-2 segundos de retraso. A diferencia de la escucha pasiva o los ejercicios de gramática, el shadowing obliga a tu cerebro y músculos de la boca a procesar y reproducir simultáneamente patrones de habla reales. Las investigaciones muestran que mejora significativamente la precisión de la pronunciación, la entonación, el ritmo, el habla conectada, la comprensión auditiva y la fluidez al hablar, convirtiéndola en una de las metodologías más efectivas para la preparación del IELTS Speaking y la comunicación en inglés en el mundo real.