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.
Specialized cells perform specialized functions in multicellular organisms.
Explanation:
soil organisms which range in size from microscopic cells that digest decaying organic material to small mammals that live primarily on other soil organisms play an important role in maintaining fertility structure drainage and aeration of soil
Answer:
The blood circulatory system delivers nutrients and oxygen.
Explanation: