These changing quantities are called variables. A variable is any factor, trait, or condition that can exist in differing amounts or types. An experiment usually has three kinds of variables: independent, dependent, and controlled.
The Inland taipan (Oxyuranus microlepidotus) is considered the most venomous snake in the world with a murine LD50 value of 0.025 mg/kg SC. Ernst and Zug et al. 1996 list a value of 0.01 mg/kg SC, which makes it the most venomous snake in the world in their study too. They have an average venom yield of 44 mg.
Many snake experts have cited the black mamba and the coastal taipan as the world's most dangerous, albeit not the most venomous snakes. Both species are elapids, and in several aspects of morphology, ecology and behaviour, the coastal taipan is strongly convergent with the black mamba.