Logo #1: Cardiogram symbolization = heartbeat = life.
Blue sphere = a globe, or a water drop (the basis for life), or a molecule.
Sharp angles= cutting-edge technology, or sharp medical equipment.
Logo #2: You may see an upside-down heart, or an aspen leaf.
I customized the first letter of "biological resources" so that it would match the logo.
Logo #3: Cardiogram symbolization = heartbeat = life. The earthy color palette makes the whole robot thing more inviting and strengthens the emotion of living on earth (thanks to medical equipment). Broad shoulders = strength and health.