Need the answer quickly   a scientist observed that fiddler crabs are capable of plugging up the territorial burrows that they live in. these territorial burrows are located underwater during high tide and are part of the exposed shoreline during low tide. evaluate the observation given the limiting factors during the high tide and low tide.

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?

The image shows a group of fish. the type of social behavior shown in the image is called

Which of these chinese regions is the most densely populated?