The cape fear river basin is the largest in north carolina. which statement best describes a river basin? a) river basins are tributaries that drain into a much larger water shed. b) a river basin is a large channel of water that is always flowing down a slope. c) it contains a major river and all the streams and creeks that flow into that river. d) it is the water found in cracks and pores in sand, gravel and rocks below the earth’s surface.

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?

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled

If a young male's body is just beginning the process of producing sperm, when is it likely that he would ejaculate mature, viable sperm"