The first line of defense involves which structure(s)?
T-cells
skin
blood
B-cells

b skin

Explanation:

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

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .