The specimen is VIRUS.
A virus is an infective agent which can only reproduce within a living cell. All virus contain genetic materials, either DNA or RNA but not both. A protein coat usually surround the genetic material of the virus. Virus can be classified based on the genetic material found in them and the size of the material.
The answer would be substance Y because as the temperature is being increased the amount of substance that will dissolve in the water is decreasing. I hope this helped
Functions of blood:
1. Blood carries oxygen from and carbon dioxide to lungs, nutrients from guts, urea from the liver.
2. It contains anti-bodies, hormones, haemoglobin and many other substances.
3. It distributes heat around the body.