Name the white blood cells that:
(a) Show phagocytosis
(b) Produce antibodies
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(a) Neutrophils
(b) Lymphocytes
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Draw a neat, labelled diagram of an animal cell showing Metaphase with four chromosomes.
What is the structure of DNA as proposed by Watson and Crick?
Complete the food chain by mentioning the names of the organisms in (c) and (d):
State any two harmful effects of acid rain.
