Answer:
B. Human activities may affect the physical environment, and the physical environment may affect human activities.
Step-by-step explanation:
Humans and ecosystems are interrelated to each other, anthropogenic activities affected the physical environments and leads to Global warming. Anthropogenic activities such as deforestation, mining, polluting the air and water created undesirable change in ecosystem and it results in climatic change around the world. Physical environment affects the human livelihoods and settlements through disasters such as Earthquakes, Tsunamis, Cyclones, heat waves, etc. But it is the result of humans degrading the ecosystem and it leads to such disasters.