Adichotomous key with information and leads to information a specific, general b general, specific c known, unknown d major, minor

Which type of respiration takes place when there is no oxygen present

What function does a limb serve in each animal how are the limb bones of the four animal similar based on the similarities what can be inferred about the evolution of the poor animals

To sciences do not agree on which type of grocery bag is better for the environment what is most likely to come out come out of the disagreement