1. How did the occurrences of the different traits change over the 30-year period? Use evidence from the graph to support your answer. Using what you know about natural selection and adaptation, what generalization can you make based on these changes?

Hey there "Minabear" but I think that the answers for this one is that the occurences that changed over the the 30 year period changed because it is now lower than the previous years at the beginning, so basically the occurance changed to being occuring more frequently from the year 1950 to changing to a lower rate of occuring frequency at the end of the graphs years which is 1980 Explanation: The graph is defnintley decreasing from the start of the graph (1950) all the way to the end of the graph (1980), and i am also taking the same project assignment on edge.

explanation:

on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.