Which is an example that separate organ systems in the human body are interacting with one another? A. Muscles shivering in response to sensing of cold environment
B. Storing waste products for later elimination
C. Exchanging of gases with the atmosphere

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?

(amoeba sisters video recap: pedigrees and need

Long-period comets come from the oort cloud particles in earth’s atmosphere material from the asteroid belt the kuiper belt