The answer would be osteoporosis
Osteoporosis comes from word osteo- which mean bones and -porosis which means "pore". The term is used to describe a decrease in bone density which makes them seems like having multiple pores. It is found more in the old patient because the bone formation is decreased.
B: An annual weather pattern
I think it’s less complex because it’s made up of only monosaccharides
True because thermal energy is mostly always used for a machine