In what situations is it appropriate to attach the direct or indirect pronouns to the end of a verb?
Pronouns may be attached to the end of verb in the infinitive form. They may also be attached to the end of commands, such as in 'Dámelo.'
What do we call a molecule or functional group in possession of either a free pair of electrons or a pi bond?
This is a nucleophile.
What is the primary mechanism through which Charles Darwin proposed the process of evolution occurred?
Natural selection - the accumulation of reproductively advantageous mutations.