Which of the following statements is a disadvantage of nonrenewable resources that a scientist could use to defend the need to reduce our dependency on them as an energy source? A. Oil reserves have a limited supply and can be depleted
B. Coal is more efficient at producing electricity than other resources
C. Biomass is more difficult to transform from chemical energy to electrical energy D. Pollution from burning fossil fuels leads to an increase in average global temperatures
E. Windmill farms disrupt habitats and require large areas to sustain adequate energy for communities

Which of the following is a question of morality? a.) delierately reporting false data b.) accidentally reporting false data c.) kepping a sloppy record of experimental observation d.) condition a drug experiment which will harm a lab rats

Iron reacts with oxygen to produce iron oxide (rust). this reaction is represented in an equation as 4fe + xo2 → 2fe2o3. identify the value of x that will balance the equation.

Recent research by marine biologists suggests that bottlenose dolphins have names for themselves. scientists played sounds they had identified as the names of particular dolphins, putting them through a synthesizer so that they did not sound like the voices of particular dolphins. the researchers found that dolphins would respond to the names of other dolphins that they were related to or associated with, but they ignored the names of strangers. this discovery suggests a much greater degree of self-awareness in aquatic mammals than was previously suspected. if this research holds up, what does it suggest about dolphins?