How do you think a dna molecule makes a copy of itself?

DNA replicated through a complex process. Many enzymes such as polymerase are involved in making new copies of DNA and transferring it to mRNA.

the sphincter muscles at the end of the digestive tract is the anus.

the transfer for conduction is the heat transfering from the liquid to the spoon

the transfer for convection is the heat rising from the liquid to the air

the transfer for radiation is the heat going through the sides of the cup and to the air

at least that is what i would do