As can be gleaned from the above, the functions, powers and duties of the FDA are specific to enable the agency to carry out the mandates of the law. Being the country's premiere and sole agency that ensures the safety of food and medicines available to the public, the FDA was equipped with the necessary powers and functions to make it effective. Pursuant to the principle of necessary implication, the mandate by Congress to the FDA to ensure public health and safety by permitting only food and medicines that are safe includes "service" and "methods." From the declared policy of the RH Law, it is clear that Congress intended that the public be given only those medicines that are proven medically safe, legal, nonabortifacient, and effective in accordance with scientific and evidence-based medical research standards. The philosophy behind the permitted delegation was explained in Echagaray v. Secretary of Justice,267 as follows: The reason is the increasing complexity of the task of the government and the growing inability of the legislature to cope directly with the many problems demanding its attention. The growth of society has ramified its activities and created peculiar and sophisticated problems that the legislature cannot be expected reasonably to comprehend. Specialization even in legislation has become necessary. To many of the problems attendant upon present day undertakings, the legislature may not have the competence, let alone the interest and the time, to provide the required direct and efficacious, not to say specific solutions. 10- Autonomy of Local Governments and the Autonomous Region of Muslim Mindanao (ARMM) As for the autonomy of local governments, the petitioners claim that the RH Law infringes upon the powers devolved to local government units (LGUs) under Section 17 of the Local Government Code. Said Section 17 vested upon the LGUs the duties and functions pertaining to the delivery of basic services and facilities, as follows: SECTION 17. Basic Services and Facilities. – (a) Local government units shall endeavor to be self-reliant and shall continue exercising the powers and discharging the duties and functions currently vested upon them. They shall also discharge the functions and responsibilities of national agencies and offices devolved to them pursuant to this Code. Local government units shall likewise exercise such other powers and discharge such other functions and responsibilities as are necessary, appropriate, or incidental to efficient and effective provision of the basic services and facilities enumerated herein. (b) Such basic services and facilities include, but are not limited to, x x x. While the aforementioned provision charges the LGUs to take on the functions and responsibilities that have already been devolved upon them from the national agencies on the aspect of providing for basic services and facilities in their respective jurisdictions, paragraph (c) of the same provision provides a categorical exception of cases involving nationally-funded projects, facilities, programs and services.268 Thus: