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.
The animal cell will swell and then eventually burst when placed in a Hypotonic Solution.
Answer:
Calcium is a chemical element with the symbol Ca and atomic number 20.
Explanation: