If X represents the half-life of potassium-40 and Y represents the half-life of carbon-14, write an expression that correctly compares the 2 half-life

Here is the half-life table:

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?

Patient has just received an organ transplant which treatment would be most effective in preventing the patient’s body from

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?