Final answer:
The statement that soil scientists only study soils at the local scale is not true. Soil scientists work at a range of spatial scales including local, regional, and global, depending on the study objectives. They use a variety of tools such as GIS to analyze soils that are diverse and dynamic across different environments.
Step-by-step explanation:
Soil scientists need to have strong observation skills and utilize a variety of methods such as aerial photos, satellite images, and geographic information systems (GIS) to analyze the characteristics of soils in different environments. They investigate the biological components, physical and chemical properties, distribution, formation, and morphology of soils through various scales, given that soils are dynamic, diverse, and have distinct horizons based on the factors influencing soil formation.
For instance, soil distribution is not homogeneous, with formation leading to the creation of soil layers or horizons. The five key factors influencing soil formation are parent material, climate, topography, biological factors, and time, which contribute to the diversity and dynamism of soils. Consequently, the scale of study by soil scientists can range from an intensive local examination of soil profiles to assessments at a broader landscape level, and even comparisons at a continental or global scale for understanding overarching patterns and processes.