How many light years is it to neptune (if is is 30 au's)?

What causes the phospholipids to organize themselves the way they do

What is the function of the somatic nervous system? connects the brain and the spinal cord to the rest of the body carry signals to the muscles and glands includes all nerves controlling the muscular system and external sensory receptors controls internal organs like the heart and bladder

Up to what percentage of the world's flora consisted of cycads during the triassic period? 100% 75% 50% 20%