Researchers have long debated different hypotheses for the phylogeny and classification of species in the bear family, ursidae. in 2008, researchers obtained complete mitochondrial dna (mtdna) genome sequences for the eight living species of bears. based on these data, the researchers constructed a phylogenetic tree for the family ursidae.

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