Vitamins help them function as fats.
I think I’ll go with C. long dry cold winters
Arthropods were the first animals to successfully invade land from the sea
Kingdoms are Archaebacteria, Eubacteria, Protista, Fungi, Plantae, and Animalia.
I'm not sure if these 6 kingdoms I listed are one of the"which of the following"options you asked for so I hope it helps.