Ill give ! darwin studied specific species of animals on the galapagos islands and other places, and observed similar species in different areas with unique traits all birds have the same size beaks giant turtles live longer than other species because of their large hearts fossils hold the key to the pastdarwin studied specific species of animals on the

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Explanation:

answer: c. two haploid cells

explanation:

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.