Final answer:
To protect cultural heritage, one can follow legislation like the National Historic Preservation Act and engage in UNESCO's efforts to preserve intangible cultural traditions.
Step-by-step explanation:
Two ways to protect cultural heritage are through legal frameworks and community engagement. Firstly, understanding, supporting, and complying with relevant legislation such as the National Historic Preservation Act (NHPA) can be crucial in protecting the cultural artifacts and knowledge of Indigenous peoples. This law requires a formal review process by federal agencies before any project is undertaken, to ensure historic and cultural sites are identified and preserved. Secondly, local communities can help protect cultural heritage by engaging in UNESCO's efforts to recognize and preserve intangible cultural traditions, such as special foods and cooking practices that form a part of the cultural identity.