Which is the best explanation for why you may not always be able to observe rocks transforming from one type to another? a most all rock is transformed beneath the surface of the earth. b the transformation of rock happens slowly over a very long time period in the geologic time scale. c most all rock is transformed by molten magma inside a volcano. d the transformation of rock happens faster than we can observe.

Nasa scientists must work together to make sure that everything is correct and accounted for when launching a shuttle. besides a physicist, what other type of scientist would be in making sure that the shuttle has the appropriate type and amount of fuel to reach its destination?

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?

Cells destroy body cells infected by a virus or bacteria. killer t t memory t none of the above