2(i)
Name the following:
(a) The basic units of heredity.
(b) The undesirable change in the environment leading to its deterioration.
(c) The structure that connects placenta and the human foetus.
(d) The statistical study of human population.
(e) The nitrogenous base that pairs with adenine.
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(a) Genes
(b) Pollution
(c) Umbilical Cord
(d) Demography
(e) Thymine