Pls 2 questions 24 points

1.if the dna molecule is so similar among all living things (the pairings are always the same and that there are only six components that make up dna), explain why is there so much diversity of life.
(type own answer in detailed explanation.)

2.if there were 10 bases of thymine in one strand of your model of dna, how many adenine bases would there be in the complementary strand?
(type own answer in detailed explanation.)

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 label identifies the part of the atp molecule that changes when energy is released in the cells of all living things

In meiosis ii during anaphase ii which structures separated homologous chromosomes or sister chromatids