The problem: Answer a question about this article:
Phytochemistry is a branch of plant biochemistry primarily concerned with the chemical substances produced by plants during secondary metabolism. Some of these compounds are toxins such as the alkaloid coniine from hemlock. Others, such as the essential oils peppermint oil and lemon oil are useful for their aroma, as flavourings and spices (e.g., capsaicin), and in medicine as pharmaceuticals as in opium from opium poppies. Many medicinal and recreational drugs, such as tetrahydrocannabinol (active ingredient in cannabis), caffeine, morphine and nicotine come directly from plants. Others are simple derivatives of botanical natural products. For example, the pain killer aspirin is the acetyl ester of salicylic acid, originally isolated from the bark of willow trees, and a wide range of opiate painkillers like heroin are obtained by chemical modification of morphine obtained from the opium poppy. Popular stimulants come from plants, such as caffeine from coffee, tea and chocolate, and nicotine from tobacco. Most alcoholic beverages come from fermentation of carbohydrate-rich plant products such as barley (beer), rice (sake) and grapes (wine).
Hemlock is what kind of chemical produced from a plant?
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The answer: toxins

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The Great Exhibition was organised by Prince Albert, Henry Cole, Francis Fuller and other members of the Royal Society for the Encouragement of Arts, Manufactures and Commerce. The Great Exhibition made a surplus of 186,000 used in creating an area in the South of Kensington celebrating the encouragement of the arts, industry, and science. Albert insisted the Great Exhibition surplus should be used as a home for culture and education for everyone. His commitment was to find practical solutions to today's social challenges. Prince Albert's vision built the Victoria and Albert Museum, Science Museum, Natural History Museum, Geological Museum, Royal College of Science, Royal College of Art, Royal School of Mines, Royal School of Music, Royal College of Organists, Royal School of Needlework, Royal Geographical Society, Institute of Recorded Sound, Royal Horticultural Gardens, Royal Albert Hall and the Imperial Institute. Royal colleges and the Imperial Institute merged to form what is now Imperial College London.
Which society organized The Great Exhibition?
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The answer: Royal Society for the Encouragement of Arts, Manufactures and Commerce

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During childhood, siblings are a source of conflict and frustration as well as a support system. Adolescence may affect this relationship differently, depending on sibling gender. In same-sex sibling pairs, intimacy increases during early adolescence, then remains stable. Mixed-sex siblings pairs act differently; siblings drift apart during early adolescent years, but experience an increase in intimacy starting at middle adolescence. Sibling interactions are children's first relational experiences, the ones that shape their social and self-understanding for life. Sustaining positive sibling relations can assist adolescents in a number of ways. Siblings are able to act as peers, and may increase one another's sociability and feelings of self-worth. Older siblings can give guidance to younger siblings, although the impact of this can be either positive or negative depending on the activity of the older sibling.
Does intimacy between same-sex siblings increase or decrease during adolescence?
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The answer: increases

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The cottonseed which remains after the cotton is ginned is used to produce cottonseed oil, which, after refining, can be consumed by humans like any other vegetable oil. The cottonseed meal that is left generally is fed to ruminant livestock; the gossypol remaining in the meal is toxic to monogastric animals. Cottonseed hulls can be added to dairy cattle rations for roughage. During the American slavery period, cotton root bark was used in folk remedies as an abortifacient, that is, to induce a miscarriage. Gossypol was one of the many substances found in all parts of the cotton plant and it was described by the scientists as 'poisonous pigment'. It also appears to inhibit the development of sperm or even restrict the mobility of the sperm. Also, it is thought to interfere with the menstrual cycle by restricting the release of certain hormones.
As what did early scientists describe gossypol ?
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The answer:
poisonous pigment