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It prevents evaporation of water from the leaf to reduce the loss of water
Any 3 from. Skin. Mucus -in nose, trachea (cilia waft the mucus into the stomach to be destroyed) . Stomach acid. lysosomes (e.g. in tears and saliva)
DNA is a double stranded helix. Each strand is held together by complementary base pairs or nucleotides. A nucleotide consists of a base, a deoxyribose sugar and a phosphate. The bases are A, T, C and G. ...
Although they both promote sustainability:Conservation is the human involvement in attempts to protect wildlife. Usually with endangered species where they can be tracked and looked...
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