Answer: Self-replicating RNA
RNA can do catalytic functions like enzymes. It carries genetic information and replicate itself. It also carries information about vesicles which carries it. RNA is less stable than DNA which confirms that genetic material is evolved from a less stable to highly stable form.
A. Nutrients, vitamins would also be a correct answer
thats easy... like really easy.... like really really easy.
oh well, here it is ✍(◔◡◔)
if there was no plant, all the herbivores would die of hunger,
no herbivores, means no food for carnivores, (AKA) secondary consumers, which would eventually mean they would eat each other causing a mass extinction in almost all secondary consumers