compuesto

Acid rain is simply rain with higher than normal acidity. Its main cause is emissions of nitrogen and sulphur compounds from burning fossil fuels to power transport, power ...

atmósfera

自然环境; 气候变化

The atmosphere is the name for the mixture of gases surrounding the earth and retained there by the planet's gravitational pull - our air, in other words. The atmosphere comprises ...

biodegradable

自然环境; 气候变化

Organic matter that can break down or decompose rapidly under natural conditions and processes is referred to as biodegradable. Garden and food waste, animal waste, and most paper ...

biodiversidad

自然环境; 气候变化

Biodiversity (a contraction of the phrase biological diversity) means the variety of life on earth, or within one particular ecosystem, in terms of the number of distinct ...

carbono

自然环境; 气候变化

Carbon is the fourth most common chemical element in the universe, and carbon compounds - in other words, carbon chemically combined with other elements - are the basis of all ...

dióxido de carbono (CO2)

自然环境; 气候变化

CO2 is made up of the elements carbon and oxygen. It exists quite naturally in our atmosphere, as part of the carbon cycle. Everyday processes in the plant and animal world both ...

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Giuliana Riveira

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行业/领域：天文学类别星系

bola de Navidad

La bola intergaláctica gigante de gas que flota en el espacio. Es el remanente de una explosión estelar masiva o supernova en la galaxia Gran Nube de ...