Your aging aunt luella has has a series of small strokes. these strokes can progressively damage her brain and are most likely to produce dementia
Answer: Single cell organisms dont need a respiratory system because oxygen and carbon-dioxe diffuses between their body tissues and the enviorment.
A dichotomous key is two paired sentences that have contrasting characteristics. That's all i know
Answer:
but no the answer is spine which can also be called vertebral column so is B
