The diagram shows the stages of the eukaryotic cell cycle. Which stage is labeled C in the diagram?
M phase
G0 phase
S phase
G2 phase

1. in what ways have non-native species been beneficial? 2. what are some of the hypotheses for the collapse of honeybee colonies? 3. distinguish between regional and functional extinction. 4. why is it difficult to measure background extinction rates? 5. what three factors are most important in causing extinction rates to climb?