Nature is precious because all things and all developments have come from it. Everything is linked to each other because, for example, if the earth is damaged, the livelihoods of humans, animals and plants are damaged; if water and air are polluted, people, animals and plants suffer and become ill; if animals and plants are destroyed, humans lack food and medicine. Catechesis on the environment, in collaboration with Fr. Jean Louis Rakotomanantsoa.