What is the chemical formula of iron (II) sulfide would be: (EO S = +2 and EO Fe = +2). please

In pea plants, the allele for tallness (t) is dominant to the allele for shortness (t). in the cross between a tall pea plant and a short pea plant shown below, what is the probability that the resulting offspring will be tall? whats the percent

When balancing a chemical equation:

When a septic tank backs up a goes in to clean it out