Malfunctioning erythrocytes are broken down, resulting in . Select one: a. formation of bilirubin. b. iron excreting into the small intestine. c. their heme groups are converted into amino acids. d. removal from the blood by the lungs. e. their components not able to be recycled.

Which could be a pathway of food through an ecosystem

Is a fossil fem that support wegener's hypothesis of continental drift a. gondwanded b. kannemerid c. mesosaurus d. glossopters

Which statements explains what the fossil records indicates? check all that apply. a) earth is 4.5 billion years old b) many organisms have become extinct c) mammals have always existed on earth d) mass extinctions have occurred several times on earth e) the amount of water on earth has decreased over time?