Studies examining certain traits are to clarify the nature-nurture debate. for example, because have the same genes, researchers often include them in studies that examine the relative influence of environment and heredity on these traits.

1. why is the soil in the mississippi alluvial plain generally better than the soil in the ozark mountains? a. farmers in the mississippi alluvial plane can afford better fertilizers. b. the soil is rich because of all the animals that died in and around the mississippi river millions of years ago. c. rivers such as the mississippi carry nutrient-rich silt that is spread around the area when the river floods d. the glaciers that flattened the ozarks took the topsoil with them as they receded. 2. people who live in the region of arkansas are likely to experience a damaging earthquake? a. mississippi alluvial plain b. arkansas river valley c.quachita mountains d. gulf coastal plain 3.what caused the great flood of 1927 to be so devastating? (select all that apply.) a. the river flooded quickly overnight leaving little warning to the people living nearby b. early warm weather in canada cause snow to melt c. levees hadn’t been built along the rivers yet d. too many dams have been bill along the mississippi river and it’s tributaries. e. the spring of 1927 so record amounts of rainfall in the midwest f. floodwaters covered parts of the state and up to 30 feet of water.