What is best illustrated by wattson and crick's ball-and-stick model of DNA

Will mark brainliest how many electrons can be held in the energy level n = 4?

Let the ed50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. if the ed50 value of ethanol is 470 mg/kg body mass, what dose would a 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz? 235 mg 470 mg 32,900 mg 35,000,000 mg

Maya wrote if you step to describe how carbon circulates between the atmosphere and living organisms