A model projects the following changes for a wetland ecosystem. Variable Current Average Projected Average Mean summer temperature 26°C 30°C Summer precipitation 420 mm 300 mm Number of drought days 18 43 Seasonal pond area 12 hectares 6 hectares Which prediction is most strongly supported by the model?
Read DetailsResearchers observed lizards in urban and nearby nonurban habitats. Habitat Average Surface Temperature Time Spent Basking Average Sprint Speed Nonurban 24°C 42 minutes 1.8 m/s Urban 31°C 25 minutes 2.3 m/s Urban heat-exposed area 38°C 8 minutes 1.5 m/s Which interpretation best fits the data? A. Moderate warming may improve performance, but excessive heat can reduce activity and physical performance.B. Lizards always perform better as surface temperature increases.C. Lizards avoid basking because sunlight prevents muscle activity.D. Urban habitat has no effect on lizard behavior.
Read DetailsA researcher found that areas with lower annual rainfall had fewer amphibian species. However, the low-rainfall areas were also located at higher elevations and had more acidic soils. What conclusions can the scientists make with this information? (0.5 points) What additional research should the scientist conduct to improve conclusions? (0.5 points)
Read DetailsScientists surveyed four stream sections. Stream Section Water Temperature Dissolved Oxygen Trout Density A 9°C 10.8 mg/L 24 fish per 100 m B 13°C 9.2 mg/L 20 fish per 100 m C 18°C 7.1 mg/L 11 fish per 100 m D 23°C 5.4 mg/L 3 fish per 100 m Which interpretation is most strongly supported?
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