All arthropods share certain key characteristics because . Select one: a. these characteristics are beneficial b. these characteristics are common to all protostomes c. these characteristics were found in the common ancestor to all arthropods d. these characteristics are found in aquatic organisms

Which of the following is a way that minerals are used? a. industry construction technology d. all of the above

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?

Has regulatory areas for thirst, hunger, body temperature, water balance, and blood pressure