The sun is composed of what prevent of matter

What type of competition exsist between two species. turtles and fish

What is the farthest destination to date for a human spaceflight mission?

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?