Q. In today’s environment, which among the following is the most active agent of Biological weathering?
Answer: Human beings
Notes: The correct answer is "Human beings." Humans are the most active agents of biological weathering due to activities like agriculture, construction, and deforestation, which disturb soil and rock. This leads to increased exposure to weathering processes. While microbes also play a important role in breaking down organic material and minerals, human impact is more extensive and widespread. For instance, human-induced land use changes can accelerate weathering rates importantly compared to natural processes.