what did scientists use to begin developing the geologic timescale?\n- numerical dating\n- rocks and…

what did scientists use to begin developing the geologic timescale?\n- numerical dating\n- rocks and fossils\n- absolute dating\n- radioactive decay\n\nquestion 18\nwhat are the main contributors to soil degradation?\n- deforestation and urban sprawl\n- intensive agriculture and climate - change\n- small crop agriculture and crop rotations\n- water scarcity and overpopulation

what did scientists use to begin developing the geologic timescale?\n- numerical dating\n- rocks and fossils\n- absolute dating\n- radioactive decay\n\nquestion 18\nwhat are the main contributors to soil degradation?\n- deforestation and urban sprawl\n- intensive agriculture and climate - change\n- small crop agriculture and crop rotations\n- water scarcity and overpopulation

Answer

Answer:

Question 1: B. rocks and fossils Question 2: A. Deforestation and Urban Sprawl

Brief Explanations:

Question 1: Rocks and fossils are key for geologic timescale development as they show Earth's history. Question 2: Deforestation and urban - sprawl remove soil - protecting vegetation and disrupt soil structure.