That sounds like magnification needs to be applied.
Attain the length of a real DNA and then measure the length of your specimen.
Magnification=length of specimen
----------------------------
real length of DNA
Pure water has a solid ph of 7 hope that helps!
The correct answer is: d. it contains many light-sensing columns called ommatidia
Ommatidia are units that form compound eyes of arthropods such as insects, crustaceans and millipedes (these are invertebrates) and make them very sensitive to motion. Ommatidia are composed of photoreceptor cells (visual detection) surrounded by support cells and pigment cells.
The eyes of vertebrates are more complex showing that progressive improvements in the structure of the eye occurred during the evolution.
HI the answer to the bproblem is Synthesis Reaction
