Which of the following describes a rapidly expanding population?
many individuals in younger age groups and a declining birth rate
many individuals in the reproductive age group and a high death
rate a high birth rate and many individuals in the younger age groups
high infant mortality combined with a high proportion of post-reproductive individuals

Florian discovers a rock that is broken into pieces. each piece has several bands. which type of rock does florian predict these pieces will change into when subjected to heat and pressure? igneous magma metamorphic sedimentary

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 statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment