The fertilized egg must have enough cytoplasm to be able to divide repeatedly into the first few dozen cells of the embryo.
It’s not flat at all, because it’s a ring.
<span>That's called heredity</span>
Answer:
all of these words relate to human impacts on the environment
Answer:
The correct answer is option A
Explanation:
Hypoparaghyroidism occurs when thyroid gland produce little parathyroid hormone.
This is caused by:
1. Injury to the parathyroid glands during thyroid and neck surgery.
2. It is also caused by auto immune disorder. This is as a result when the body's natural defence against invading organisms starts to attack perfectly healthy tissues.
3. Congenital defects: This is as a result when infants are born without parathyroid tissue, that is ability to make thyroid glands or when the mother has hypoparathyroidism.
