Diffusion is a process in which a movement of substance takes place from a high concentration area to a low concentration area due to the random movement of the particles.
The smell of perfume travel because the particles move from their high concentration to low concentration and mix with the gases present in the atmosphere. Diffusion happens in gases more faster than liquids and solids because of the random movement of their particles.
By using the strand as a template, it conserves the information from half of the DNA molecule. By the end of replication, it contains one original strand and one strand which is newly synthesized.
The deer and tick have a parasitism relationship as only the tick benefits from the relationship and the deer is being harmed. If Both were benefiting it would differ.
