Which statement about malaria and sickle-cell anemia is correct? (1 point) A. Sickle-cell anemia is correlated with an increased incidence of malaria. B. Malaria causes a decreased incidence of sickle-cell anemia. C. Malaria is correlated with a decreased incidence of sickle-cell anemia. D. Sickle-cell anemia causes an increased incidence of malaria.

When does a spring tide occur? question 9 options: they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur twice a year in the spring and fall. they occur on the date of the vernal equinox each year, no matter what stage the moon is in. this is why they are called spring tides. they occur when the sun, moon, and earth are at 45-degree angles from each other. this happens once every spring. they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur all year long.