To be considered members of the same species, organisms must be able to A. look alike
B. reproduce together & have fertile offspring
C. live in the same habitat
D. eat the same types of food​

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called

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?

This is an active transport mechanism by which cells pump sodium and potassium ions against the concentration gradient