Maria, after finding no cold sodas in the refrigerator, placed a can of soda in the freezer. she then proceeded to check her social networking site and forgot about the soda. later that evening her brother went to get some ice and it was brown. maria's soda can had split open. what is the best explanation for what happened?

1. in what ways have non-native species been beneficial? 2. what are some of the hypotheses for the collapse of honeybee colonies? 3. distinguish between regional and functional extinction. 4. why is it difficult to measure background extinction rates? 5. what three factors are most important in causing extinction rates to climb?