Answer:
Over the past few years, studies in worms, jellyfish, and hydra have challenged the long-standing idea that sleep is unique to creatures with brains. Now, “The real frontier is finding an animal that sleeps that doesn’t have neurons at all,” says David Raizen, a neurologist at the University of Pennsylvania (UPenn) Perelman School of Medicine. Sponges, some of the earliest animals to appear on Earth, fit that description. To catch one snoozing could upend researchers’ definition of sleep and their understanding of its purpose.
Step-by-step explanation:
my explanation is over the past few years students in worms jellyfish and challenges the wrong stand ideas that sleep is Aquarian to creators with rings now the real answer is finding that animals that sleep that doesn't have nerves at all play David