What are ethical and aesthetic services? the products that humans obtain from the ecosystem that they can use

the contnbutions of ecosystems that benefit human
survival and well-being

the nonmaterial benefits that humans receive from ecosystems

the material benefits that humans receive from ecosystems

Iam in desperate need of with this !

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

What is the volume of 3.2 moles of chlorine gas (cl2) at 295 k and 1.1 atm?