The idea that speciation occurs in bursts, between long periods of genetic equilibrium is called —

a. punctuated equilibrium.
b. stabilizing selection.
c. genetic drift.
d. gradualism.

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?

What might explain the real-world results, show in the graph to the right, for one class of twenty students? check all that apply.

Photosynthesis converts solar energy into what type of energy? o a. chemical energy o b. electron energy o c. water energy o d. photon energy