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Yakvenalex [24]
3 years ago
14

​between birth and adulthood the brain ______ in volume.

Biology
1 answer:
insens350 [35]3 years ago
8 0

 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.

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Explain why scientirsts concluded that the instructions for species characteristics were carried in DNA.
siniylev [52]

Answer:

Explanation:

Deoxyribonucleic acid is said to contain instruction for species characteristics because it carries the information that characterize an individual.

DNA are made up of Nitrogenous bases that are unique codes specify by an individual and no two person has the same the DNA.

Genes are genetic information or instruction that specify an individual. it is located in the chromosome in the nucleus. DNA contains gene which helps to make molecules called proteins. It is the basis of all inheritance and the expression of the gene is what produces the phenotype that is visible.

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3 years ago
Which pair of scientific fields would be most useful in investigating human
ella [17]
I would say D! Purely because it is looking at the effects of humans (therefore related to topics more geographical).



Hope that helps. :)
6 0
2 years ago
What valve is located between the left atrium and left ventricle?
Jet001 [13]
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3 0
3 years ago
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ICE Princess25 [194]

The correct answer is: first level.

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8 0
3 years ago
Why does CaCl2 need to be added to cells to make them 'competent'? Why does CaCl2 need to be added to cells to make them 'compet
V125BC [204]
DNA is a negatively-charged molecule. Also cell membranes are negatively charged. The problem would be how to push this charges together? I<span>f you put some CaCl2 into the mixture, the CaCl2 will "split" giving 2Cl- and Ca2+. This last ion will be attracted by the negatively charged DNA and will "cover" it, hiding its negative charge. Hope this answers the question.</span>
8 0
3 years ago
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