why UN left out Food and Environment

The United Nations published The Declaration of Human Rights which consisted of 30 articles; the articles corresponded to the 7 human securities’ that protect everyone in the world. The U.N. left out food and environmental security. I believe they left of these two security’s because the other 5 security’s make food and environmental security essentials to everyday life. If all the other securities are protected then there should be no problem for one individual to get food and live in a safe environment.