B SUMMARIZE Complete the summary using information from the reading passage.Write no more than one word In each space. Recent research shows that other species have much more in common with humans than we used to think. One example is how __ seem to be sad when a member of their herd dies. However, it is? __ to suggest that animals feel emotions in the same way as humans. One experiment involving __ showed that, in certain cases, they tried to prevent others' suffering -a possible example of empathy. Other research involving baboons, tadpoles, and dolphins showed that they engaged in behavior resembling __ It isn't clear why animals engage in it,but some researchers think It's just for sheer joy. One way to think of the concept of emotions is that feelings like love and sadness might not be very different from hunger and thirst as they are all __ states that make us do something. This understanding of the inner lives of other species may make us treat them differently.