What specialized cells serve and protect the body from injuries and diseases?

The correct answer is leukocytes.

Leukocytes also called white blood cells refers to the cells of the immune system, which takes part in safeguarding the body against both the foreign invaders and infectious diseases.

All the white blood cells are obtained and generated from the multipotent cells in the bone marrow called hematopoietic stem cells. Leukocytes are found all over the body, including the lymphatic system and the blood.

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

transformative rocks are the stones that emerge from the transformation of existing rock composes in a procedure called changeability, implies changing of structures. transformative rocks are shaped from alternate shakes that are changing a result of warmth or weight connected. one of this model is the earth developments that making rocks profoundly cover or crushed which will make the stones warmed and put under awesome weight. they are not softening but rather the minerals they are containing are changed synthetically that will shape transformative rocks. now and again different rocks are shaped when the others are near some liquid magma and getting warmed.