Is our world comming to an end??? Please dont delete this or report it Its Sirius

Which of these has happened to your food by the time it reaches your small intestine? a. all the macromolecules have been broken down completely. b. lipids and starches have been partially broken down. c. starches and proteins have been partially broken down. d. proteins and lipids have been broken down into subunits.

Hemoglobin is a proton that carries oxygen around the body what is hemoglobin made from

Injuries in the environment are a result of