Plants not only remember when you touch them, but they can also make risky decisions that are as sophisticated as those made by humans, all without brains or complex nervous systems.

    Researchers showed that when faced with the choice between a pot containing constant levels of nutrients or one with unpredictable levels, a plant will pick the mystery pot when conditions are sufficiently poor.

    In a set of experiments, Dr. Shemesh, from Tel-Hai College in Israel, and Alex Kacelnik, from Oxford University, grew pea plants and split their roots between two pots. Both pots had the same amount of nutrients on average, but in one, the levels were constant; in the other, they varied over time. Then the researchers switched the conditions so that the average nutrients in both pots would be equally high or low, and asked: Which pot would a plant prefer?

    When nutrient levels were low, the plants laid more roots in the unpredictable pot. But when nutrients were abundant, they chose the one that always had the same amount.

The New York Times, June 30, 2016. Adaptado.

(FUVEST 2017 1° FASE) Segundo uma das conclusões dos experimentos relatados no texto, as plantas de ervilha demonstraram

(ENEM 2018 2º APLICAÇÃO)  As Artes Maciais Mistas, tradução do inglês MMA- mixed martial arts, são realizadas num octógono regular. De acordo com a figura, em certo momento os dois lutadores estão respectivamente nas posições G e F, e o juiz está na posição I. O triângulo IGH é equilátero e GÎF é o ângulo formado pelas semirretas com origem na posição do juiz, respectivamente passando pelas posições de cada um dos lutadores.

A medida do ângulo GÎF é 

Analise as imagens que representam seres vivos de um reino composto por organismos aquáticos de vida livre ou parasitas de animais e outros grupos.

Disponível em: <http://www.brasilescola.com/upload/conteudo/images/34d4088f4e76c7f17f0831e11f103002.jpg>. Acesso em: 25 set. 2012.

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Choose the correct alternative.

I went to the shopping center _______ the shops were closed.