Textbook mistakes.

Textbooks published by the Balochistan Textbook Board (BTBB) meant for various classes are taught in many federal institutions as well because they are actually good. It is unfortunate, however, that there are some flaws, particularly in IX grade textbooks. For instance, English adjectives are used as adverbs. The IX grade biology textbook has several blunders. On page 64, Robert Brown is said to have discovered nucleus in 1831, whereas on the very next page the text says it happened in 1833. The former is correct, by the way.

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