Isotopes of the same element have different
a) positions on the periodic table
b)chemical behavior
c) atomic numbers
d)mass numbers

Secondary pollutants are more harmful than primary pollutants. select the best answer from the choices provided ot of

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 reactions that occur in the ribosome, where amino acids are combined to form proteins are anabolic or catabolic?