Which of the choices listed below are characteristics shared by all epithelial tissues? 1 contain a high amount of extracellular matrix (substance between cells) 2 avascular (no blood vessels) 3 cells closely joined together 4 form surface layers 5 found immediately next to blood-vessel rich connective tissues?

During endocytosis, cells expel what they don't need take in what they need shrink due to loss of water

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 methods are the most common for dealing with waste