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1.
The pigment in the skin responsible for skin colouration is
xanthophyll.
melanin.
velamin.
carotene
2.
An important function of organic matter in the soil is to
improve texture of the soil.
control harmful bacteria in the soil.
serve as a mulch.
supply both micro and macro nutrients.
3.
Members of the same species living in the same place at the same time make up the
trophic level.
ecosystem.
community.
population.
4.
Species, genus and family are examples of
binomial classification.
taxa.
phyla.
genera.