Question

Chapter 53 Homework Scientific Thinking: Can Ordinary People Help Scientists Explain Patterns in Bluebird Reproduction? Part B Interpreting data To test the egg-viability hypothesis, researchers set out to determine whether its predictions were bome out. Predictions of the ega-viability hypothesis include Prediction #1 : The probability of natching falure wil be lower at higher latitudes (because temperatures reman cooler at higher latitudes Prediction #2: The probability of hatching failure wil be higher later in the season (because temperatures are warmer later in the seeson). Prediction #3: The probability of hatching f lure wil be higher in larger d?c es ¡because in larger dutch lhe earier eggs have to wait longer fo incubation to begin Prediction #4: The probability of hatching failure will be higher for eggs laid earlier within a clutch (because eggs laid earlier in a dlutch have to wait longer for incubation to begin) Citien scientists manitored bluebird nesthaxes throughout the breeding season and reported details such as date, location, number of eggs, number of hatchlings, and number of unhatched eggs, The three graphs below show the data they collected Review the graphs to determine whether the data support the iour predictions 006 0.06 0.06 Graph A Graph B Graph C 0.05 0.05 0.05 0.03 0.02 0.01 0.03 0.02 002 001 20 60 80 Day of Season Clutch Size Drag tha terms to th? appropriate blanks to complete the santonces. Reset Help Graph A shows that the probability of hatching falure later in the season. The data Prediction #2 the largest 2. Greph B shows thet the probebility of hatching falure at higher latitudes, The deta the smallest Prediction #1 both the largast and the 3. Graph ? shows that the probabilty of hatching failur@ is highest for clutch s zes The Prediction #3 laid earliest laid latest 4, Researchers were unable to test Prediction #4 . This is because it wos too dfficult for volunteers to collect data on which eggs were do not support RequestAnswer

Answer 1

1. Graph A shows that the probability of hatching failure increases later in the season. The data support prediction #2.

2. Graph B shows that the probability of hatching failure decreases at higher latitudes. The data support prediction #1.

3. Graph C shows that the probability of hatching failure is highest for both the largest and smallest clutch sizes. The data do not support prediction #3.

4. Researchers were unable to test prediction #4. This was because it was too difficult for volunteers to collect data on which eggs were laid earliest.