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The tunneling of a small particle through a potential barrie…

The tunneling of a small particle through a potential barrier will be ______.    

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Pronombres relativos. Elige la opción correcta. Su tío, [1…

Pronombres relativos. Elige la opción correcta. Su tío, [1] es biólogo, acaba de irse de viaje al desierto. Susana y Alba, con [2] estudié el año pasado, ahora viven en Caracas. Los paisajes [3] vimos en Costa Rica son espectaculares. La persona para [4] trabajo tiene una tortuga. La capa de ozono se está deteriorando, [5] es un problema grave. Mi amiga [6] trabaja en el acuario se llama Estela. ¿Es éste el libro en [7] viste la foto del profesor? La semana próxima es la entrevista para [8] Marta se prepara todos los días. El tigre es un animal [9] caza con mucha habilidad. Esos árboles, [10] nombre no sé, son bellísimos.

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Video Question What fish in the video graze on algae and are…

Video Question What fish in the video graze on algae and are consumed by Lionfish?

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Video Question Forests cover approximately ______ percent of…

Video Question Forests cover approximately ______ percent of the Earth.

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Until about 10,000 years ago, our species depended on ______…

Until about 10,000 years ago, our species depended on ________.

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Video Question Crops pollinated by bees are worth ______ acr…

Video Question Crops pollinated by bees are worth ______ across the world.

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Overirrigation can result in ________.

Overirrigation can result in ________.

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Video Question In the U.S., ______ percent of old growth for…

Video Question In the U.S., ______ percent of old growth forests have been cut down.

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Video Question How does Earth University sustainably produce…

Video Question How does Earth University sustainably produce banana crops?

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Which artist is famous for his bronze doors on the Florence…

Which artist is famous for his bronze doors on the Florence Baptistry?

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