Me dicen la importancia de la unión antígeno – anticuerpo.
Ayuda es rgente D:

b brown mice / white sand dunes

i guess because there isn't enough love going around. < 3

well, since there is no answer choices, i will give an answer on how it works : )

the two objects are placed together. energy will always be transferred from the hotter object to the cooler object until they are equal. hope this is close to one of the answer choices : )

answer(isometric);