Which questions (more than one) would clarify the evidence in the chart? (note: enteric fermentation is a way that some animals digest food) a. what are the other sources of methane gas that are responsible for 8% of emissions? b. which type of livestock releases the highest quantities of methane gas during digestion? c. what is the predicted rate of increase for the emission of fluorinated gases in the twenty-first century? d. which gases are released during production of electricity from fossil fuels? e. which production processes lead to the release of carbon dioxide during coal mining?

Refer to this portion of a dichotomous key for fish identification to answer the question. 1. (a) has a single dorsal fin ® 5 (b) has a double dorsal fin ® 2 2. (a) one fin is spiny, the other is smooth ® 3 (b) one fin is not spiny or smooth ® 4 5. (a) has small fin on back near tail ® 6 (b) has no fin on back near tail ® 7 6. (a) has barbs near the mouth ® catfish (b) does not have barbs near the mouth ® 10 7. (a) tail is asymmetrical ® 8 (b) tail is symmetrical ® 9 10. (a) scales are small ® trout (b) scales are large ® whitefish what is the next step to complete to identify a fish that has a single dorsal fin, no fin on the back near the tail, and no barbs near the mouth? step 2 step 5 step 7 step 10