Many cells whose division is regulated by proteins made by the CDKN2A gene have a specific role in the human body. Skin
melanocytes, for instance, produce melanin, a pigment that helps
protect skin cells from ultraviolet radiation. When melanocytes
undergo mitosis, they are able to form only other melanocytes. Which
two terms best describe what type of cell melanocytes are?
A. specialized
B. differentiated
C. totipotent
D. pluripotent
E. undifferentiated

cuz they cant breath

explanation:

characterization of nanoparticles is a critical step in nanomaterial production as it provides information of dimension, morphology, surface charge, distribution and degree of surface functionalization.

six grader is what i am ssorry

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.