basil mosquito repllent

Popular lore has transmitted the use of basil as a mosquito repellent to avoid their bite. Why this plant repel mosquitoes?
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Ferdinand the Catholic

It is quite likely, to procure their own common offspring, that King Ferdinand the Catholic had invigorating potions while married to Germana de Foix.
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VICENTE PALACIOS replies: One of the most striking wolf behaviours is howling. Through howling, wolves can reach and communicate from several miles of distance. Howls may contain information regarding the individual

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Question sent by ELENA SOLBES. JORDI DE MANUEL answers: Milk is an extraordinary food. It contains almost all the necessary nutrients to live and grow, but after mammals wean, they lose the

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Question submitted by FRANCESC AGUILAR I DOMENJÓ (Grau de Castelló). MANEL PERUCHO answers: The latest Background Microwave Radiation observations and type Ia cosmological supernovae indicate that the Universe has a flat

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And Why Is the Mediterranean Higher during the Winter? Question asked by FRANCESC AGUILAR I DOMENJÓ (Grau de Castelló). JOSEP L. PELEGRÍ answers: Both of our reader’s questions deal with sea tides,

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pubic hair

Question sent by ONOFRE GISBERT (Vistabella del Maestrat). PAU CARAZO answers: As we pointed out  in a recent question about why are men hairier than women, our ancestors underwent a process of

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Question sent by JORGE GIL FERNÁNDEZ (València). FERNANDO SAPIÑA answers: We can find a lot of videos on YouTube showing different phenomena in slow-motion: a bullet going through a piece of fruit,

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Question sent by LAURA RUBINAT (Tàrrega). ALBERT MASÓ answers: Well, to give an answer to that we first need to settle what we understand by «urinating». Obviously, if we limit it to

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Question sent by ROBERTO SOLANO. ANA GARCÍA answers: Women's life expectancy in developed countries is, indeed, higher. This is due to a combination of biological factors and lifestyle. There is, for instance,

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Why are men hairier than women?

Question sent by TAMAR ARENAS (Belfast). PAU CARAZO answers: The quick and easy answer to this question is that men are actually not hairier than women. Two very different classes of hair

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Question sent by TERESA OLIVER (Alcoi). EDUARD ESTIVILL and NURIA ROURE answer: Sleep and waking life are brain functions and are thus subject to changes of the nervous system. Sleep is neither

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Question sent by VÍCTOR SOLVES (València). ENRIQUE FONT answers: Caudal autotomy is a defence mechanism against predators, and it is widespread among lizards and some snakes. Tail dropping is an effective anti-predatory

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Question sent by JAIME LÁZARO (Manises). JUAN ANTONIO RAGA ESTEVE answers: Ambergris grows inside the intestine of sperm whales and thus it is part of its faeces. It is formed by the

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Question sent by Víctor Marqués (València). ALBERT MASÓ answers: The statement is false. Instead of answering the question, we are going to explain the falseness of the implicit premise in the question.

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Question sent by NEREA MILÁN (València). JOAN MAYOL answers: In medicine, the pathological ingestion of soil or other inedible substances is called «pica», and it has been observed in many animal species,

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Question sent by GUILLERMO GUEVARA PARDO (Bogota). FERNANDO BALLESTEROS answers: Although raindrops are usually represented in the shape of a teardrop, actually, they are almost circular. When a beam of light enters

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Question sent by DÍDAC COROMINAS (Girona). FERNANDO SAPIÑA answers: Both olive oil and drinking water are basically constituted by a specific type of molecule—triacylglycerols (commonly known as triglycerides) in the former case

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Question sent by MARTA ARENAS (Valencia). GUILLEM PÉREZ I DE LANUZA answers: Certainly, birds do show a wider colour diversity than mammals. What’s more, colours in birds are brighter and more complex

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Question sent by RAFAEL MESA MANZANO (Manises). JULI PERETÓ answers: That plants on Earth are green is not sheer chance, but the result of a long evolutionary history determined by the atmosphere.

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Question sent by IRENE MAYOR SÁNCHEZ (La Vila Joiosa). DANIEL CLIMENT and ESTEVE SOLER answer: Tannins, complex substances inside the group of polyphenols that coagulate certain proteins, are responsible for the

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Question sent by JOSE GALÁN (Alacant). EDUARDO ROS answers: «Clouds are not spheres, mountains are not cones, coastlines are not circles, and bark is not smooth, nor does lightning travel a

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Question sent by COCO BROSS (Buenos Aires). JOSEP ROS answers: Even though this is a widespread idea, the hemisphere in which the sink is does not univocally determine the direction of the

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Question sent by ROCÍO ROS (València). LYDIA GIMÉNEZ-LLORT answers: Even though it is a feature all vertebrates share —from the fetus stage to old age—, and in spite of the curiosity this

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