Acids turn blue litmus paper .

Red
Yellow
Green
Blue

This is the diveristy of ecosystems natural communites and habits it is the variety of ways that species interact with each other and their environment

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?

To be or not to be that is da question