Physical change because you didn't change the chemical compound
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How we can use images to promote and communicate science ... the cliché, “a picture tells a thousand words”, but there is real value in ... Images help us learn, images grab attention, images explain tough ... at BioMed Central, one thing I've realised is how vital images are in my role. ... Here's an example:.
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La radiación UV-B es parcialmente absorbida por el ozono y llega a la superficie de la tierra, produciendo daño en la piel. Ello se ve agravado por el agujero de ozono que se produce en los polos del planeta.
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