Narrower niche 3. How do trends occur and speciation 1. Phyletic gradualism a. Both may occur, but record favors punctuated equilibrium. Where does all this leave us in terms of the fossil record 1.
Implications are the basis for paleoecology and biostratigraphy.
Some species go extinct, 2. Why species go extinct 1. Environmental Change a. Survival as a race between environmental change and evolution. To slow to out run more rapid predator. Small populations are whipped out by a random event.