Yes, death does satisfy the law of conservation of energy. When a person dies the energy in his body (stored in the form of heat, muscles and fat) is lost to nature. The heat energy is the first to be dissipated. read more
Science is more about proving thing than believing, as per belief is consider one should intuitively believe on law of conservation of energy and as per proof energy is not conserved, rather Energy and Mass combined is conserved (Thanks to the Equation [math] E=mc^2 [/math]) . read more
As per my knowledge, Vedic religion (Sanatana Dharma) does not believe in the law of conservation of energy. The proof for this is the first line of Isha Vasya Upanishad (Iso Invocation). As per Vedas, God is a source of infinite energy (fraction of which is manifest in this world). read more