I need anatomy analogies for the nervous system, skeletal system, muscular system, circulatory system, respiratory system, digestive system, (only one analogy is needed for any of the systems) I need to have 5-10 main organs, physiology and homeostasis thank you please no links or files.​

Which gas found in the earth's atmosphere greatly impacts the daily range of temperature on earth. a) oxygen b) hydrogen c) nitrogen d) water vapor

Approximately how much solid waste do americans produce annually? a) 250 tons b) 250 thousand tons c) 250 million tons

What is a functional group? a group of organic molecules that work together to speed up reactions a group of organs in the body that work together to perform a certain function a group of atoms bonded to carbon that determines how the molecule will react a group of living things that are made up of organic compounds