Answer:
a,c and d
Explanation:
- brain becomes smaller and lighter with age and although in absence of disease, it retains its structure and function.
- the brain shrinks, it pulls away from from the skull and the amount of amount of space between brain and skull doubles between 20 to 70 years of age.
- Blood flow reduces within the brain , which also uses less oxygen and glucose.
Hence, options a, c and d are correct.
1.convergent
2.divergent
3.transform
Answer:
Inserting arginine places a positively charged amino acid in a portion that is non-polar, creating the possibility of a hydrogen bond in this area.
Explanation:
Answer:
B
Explanation:
humans will be overly exposed to strong UV light. UV light causes skin cancer, cataracts, sunburns, weakening of the immune system and quick aging.