In the nucleus of an atom (the center part) there are protons and neutrons, and floating around them are electrons. here is a pic. hope it helps you!
The living plants may convert the glucose produced during photosynthesis into disaccharides, polysaccharides or starch.
Well depends on how hungry they are, 18 grams is a little less than 2 3rds of an ounce. 1 single serving is about 4 ounces.