Answer:
Explanation:
Causes of hypocalcemia (calcium deficiency):
- Menopause
- Low levels of vitamin D
- hormonal imbalances (removal/overactivation of parathyroid)
- renal failures
Symptoms of hypocalcemia:
- Memory loss or confusion
- muscle spasms
- numbness/tingling in the extremities (hands, feet, face)
- brittle nails
- more prone to fractures
The correct option is D.
Wind has some advantages which makes it suitable as a source of energy but it also possesses some disadvantages which reduces its potentials as a viable source of energy. For instance, large expanse of land will be needed to construct wind farms and this may not be feasible especially in populated areas. Another disadvantage is that electricity production will be depended on the availability of wind, when there is no wind, there will be no electricity.
Answer: D
Explanation:
Many unicellular organisms live in bodies of water and must move around to find food. Most often, they must obtain nutrients by eating other organisms. Plant-like protists, and some types of bacteria, can make their own food through photosynthesis.
