Answer:
Sickle cell trait has been observed in regions where malaria is common for over 50 years and has since become renowned for its perplexing ability to protect its carrier from malaria.
Explanation:
Their failure will adversely affect our ability to control malaria.
For me rose quartz and amethysts helps a lot :)
Answer:
At the optometrist they test your eyes to see if you have glaucoma