What did Texas struggle with after achieving its independence?.

This passage says that the government is necessary because . the passage states that checks and balances are needed to

Ascientist performs an experiment where she measures the mass of a piece of metal, pours acid onto the metal, washes the metal, and then re-measures the mass of the metal. the scientist repeats the experiment several times, each time increasing the amount of acid used. the dependent variable in the experiment is the: initial mass of the metal final mass of the metal amount of acid used washing the metal

Which of the following is an example of an iron triangle?