The abiotic factors of the savannah are generally the same or similar as of most biomes. Abiotic simply refers to non-living components. Soil is sometimes called an abiotic factor though can and should be thought of as biotic. Climate, weather, latitude, geological underpinnings, etc. are all abiotic factors.
The term disinformation began as a term of Soviet tradecraft, first defined in the official Great Soviet Encyclopedia as the dissemination (in the press, radio, etc.) of false information with the intention to deceive public opinion..
In politics, disinformation is the deliberate attempt to deflect voter support of an opponent, disseminating false statements of innuendo based on a candidate's vulnerabilities as revealed by opposition research. In both cases, it also includes the distortion of true information in such a way as to render it useless.