Why must essential amino acids be consumed in our diet? a. they make food more palatable to consumers. b. our body cannot manufacture them from other amino acids. c. they the body store energy in the form of fat. d. our body needs essential amino acids to build simple sugars. e. they digest and break down protein-rich foods?

phylogenetic tree is the tree of life or evolution tree. it shows the different branches of evolution. the sequence goes like tissues - coelom - backbone - endoskeleton - segmentation

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.