Answer:
A
Explanation:
An isolated system can NOT exchange energy or matter with it's surroundings. This is why it is isolated.
The primary benefit of folic acid is that it helps in preventing neural tube defects. Folic acid also known as Vitamin B9 are used as a supplementary vitamins taaken by many pregnant mother in order to develop the baby without deformities. Lacking of Folic acid causes neural tube defects define as an irregularities of the brain and spinal cord during the first week of prenancy
Answer:
yes evolution do exist in nowadays also.
