O aquecimento global é o aumento da temperatura média do planeta terra, atribuído ao acumulo de certos gases na atmosfera. Um desses gases é o gás carbônico. Entre as medidas propostas para o controle do aquecimento global, está a diminuição na emissão de gás carbônico por industrias e automóveis, o controle do desmatamento e o plantio de novas árvores. Explique por que o reflorestamento e o plantio de árvores nas cidades podem reduzir os efeitos do aquecimento global, considerando o que você aprendeu neste capítulo sobre fotossíntese.

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Aflashlight produces light using energy from the batteries. in which order does the energy change form? a. from chemical to electric to light energy b. from electric to light to chemical energy c. from electric to chemical to light energy d. from light to electric to chemical energy

The graph below compares the rates of reaction of a burning candle and an exploding firework. comparing chemical reactions what can you conclude from the graph? the reaction that causes a firework to explode requires less energy to start, and occurs more rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires less energy to start, and occurs less rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires more energy to start, and occurs less rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires more energy to start, and occurs more rapidly than the reaction that causes a candle to burn. mark this and return