Question

​between birth and adulthood the brain ______ in volume.

Answer 1

 Brain loses 5 to 10% of its weight between the ages of 20 and 90. One study found that the volume of the brain was 15% less in older adults than in younger adults. On average, the brain loses 5% to 10% of its weight between the ages of 20 and 90 years; brain volume also decreases.