Describe at least two facial or cranial traits you used to make this determination. (Be sure to describe how each trait appears in the two fossils.)

answer; ///(b) it is composed of four protein chains and four heme groups;

true, i don't really know what you're asking but from the info you provided im guessing the answer is true.

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.

the cell is the smallest structural and functional unit of living organisms, which can exist on its own. therefore, it is sometimes called the building block of life. some organisms, such as bacteria or yeast, are unicellular—consisting only of a single cell—while others, for instance, mammalians, are multicellular.