launching the 100 essential ecological activities for the 1987-1988 biennium. 296. In this context, the Government also counts on preventing emergency situations in the event of temperature inversions by means of the measures set forth in the Environmental Hazards Programme. 297. In respect of the protection and improvement of work hygiene, the Federal Labour Act stipulates that employers have an obligation to their workers to install in all workplaces the necessary items to prevent work hazards and injury to the workers, and also to prevent pollutants exceeding the maximum permissible levels laid down in the regulations and instructions on this subject. In this connection Article 123, Section A, subsectionXV, states explicitly that "every employer shall be obliged to observe, in accordance with the nature of his business, the legal prescriptions on hygiene and safety in the installations in his establishment ... The laws shall include suitable penalties to cover each case". 298. A National Programme of Environmental Education has been launched to make 600,000 teachers in preschool, primary and secondary establishments aware of the problems. Environmental education will be included as a subject in the curricula for degrees in preschool, primary and special education. In addition, 2 environmental education supplements will be prepared for the textbooks, 300 audiovisual material packs will be put together for nationwide distribution, together with 14 booklets on ecological techniques for projects of environmental education and promotion. 299. To deal in an integrated manner with the problems of the floral and faunal resources of the various ecosystems in Mexico, efforts to protect and develop them have continued in conjunction with the communities involved and the local authorities, in an attempt to increase the number of reserves for species threatened or in danger of extinction, and also to run nurseries and rearing stations to restore the numbers of the threatened species. In 
**Analysis**
The text appears to focus on initiatives and programs aimed at protecting the environment, promoting ecological activities, and educating the public about environmental issues. It also touches on the responsibility of employers to ensure work hygiene and safety. This suggests that the text is primarily related to environmental concerns, education, and labor practices.

**Category**
Natural resources and environment, Education