Question

Drag the blue labels onto the table to identify the data that is relevant to each hypothesis. Then use the pink labels to indicate whether each hypothesis is supported or not supported by the data.

Answer 1

Hypothesis Data collected Hypothesis supported? 1. Traits that help individuals avoid being hit by cars have evolved through natural selection in the cliff swallow popul ation. The wing shapes of swallows killed on roads differ from those of the general population. yes (additional data may be needed) 2. The population size of cliff swallows living near roads has decreased over time The total number of cliff no swallow nests near roads increased during this time. (probably not a fadtor) 3. Scave nger population sizes have increased, and more road-killed swallows get eaten before they can be found. Avian scavengers did not increase during this time, and terrestrial scavengers probably did not increase. no (pro bably not a fact or) 4. The number of cars driving on these roads has decre ased over time. Car traffic stayed the same or increased during this time. no (probably not a fadtor)