What is an environmental challenge associated with the production of wool?

The production of wool presents several environmental challenges that encompass a variety of factors impacting ecosystems and resources. One significant issue is excessive land degradation; this occurs because grazing sheep require large areas of land, which can lead to overgrazing and depletion of soil nutrients. Secondly, high water usage is a concern as sheep farming often requires a substantial amount of water for both the animals and the production of feed crops. Lastly, emissions of greenhouse gases are relevant to wool production as methane, a potent greenhouse gas, is emitted during digestion by sheep, contributing to climate change.

All these factors—land degradation, water usage, and greenhouse gas emissions—combine to create a multifaceted environmental challenge associated with wool production. This comprehensive view highlights the interconnectedness of agricultural practices and their environmental impacts, which is why the correct answer encompasses all these aspects.