Sickle cell disease is passed on from parent to offspring. Sickle cell disease is an _ disease. Some carriers of the disease exhibit increased resistance to malarial parasites. This resistance is a _ mutation.

a community that experiences major changes undergoes progress

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

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