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UNAM -> HISTORIA DE MÉXICO SIMULADOR PARA LA UNAM

Durante el gobierno Cardenista, se incrementó el número de huelgas laborales, incluso, fomentadas por el propio gobierno para obtener mejores salarios. ¿Qué propició el impacto de éstas huelgas?

Exani II -> Módulos Específicos -> Economía

Debido a la pandemia por COVID-19, la producción de las empresas que son propiedad de mexicanos dentro o fuera del país se ha visto afectada. ¿Qué indicador refleja la disminución total anual de la producción de las empresas?

Exani II, Exani II -> Pensamiento Matemático

¿Cuál expresión permite calcular el valor del ángulo B?

Banco de preguntas Precavidos


Exani II -> Redacción indirecta

Complete el enunciado con las grafías correctas.

Es lí___ito y signo de sensate___ que los especialistas se cer___ioren del parente___co.


UNAM -> FISICA SIMULADOR PARA LA UNAM

Un río (ancho=6m, profundo=3m, v=2.5 m/s) se une con otro río (ancho=6m, profundo=2m, v=8m/s) para formar un solo caudal. Si el ancho del caudal principal es de 10m y su velocidad es de 5 m/s, ¿Cuál es la profundidad?

Exani II, Exani II -> Pensamiento Analítico

Se encuentran apiladas tres fichas con el mismo diseño. Si se deslizan y se colocan una a la izquierda y otra a la derecha, ¿Cuál es la vista superior de las fichas cuando quedan alineadas?

Banco de preguntas Precavidos


IPN -> Biología IPN

Zona del océano con abundante luz y diversidad como corales y medusas.

UNAM -> QUIMICA SIMULADOR PARA LA UNAM

Sobre la clasificación de sustancias, elige las oraciones que son
correctas.
I. Todos los compuestos son sustancias.
II. Todas las sustancias son compuestos.
III. Todos los compuestos son 2 o más elementos.
IV. Todas las mezclas son sustancias.

Inglés

Choose the correct answer for each question according to the information in the text. Each line is numbered to help you identify them quickly.

Sunflowers Make Bees Poop—a Lot. Here's Why That's Good
Paragraph Text
[1] Bumblebees and other pollinators face many threats, including pesticide exposure,
[2] climate change, habitat loss due to agriculture and development, and pathogens
[3] that ravage multiple species. But a recent finding may help lighten their load.
[4] Previous studies have shown sunflower pollen can work like a medicine for
[5] bumblebees afflicted by a parasite called Crithidia bombi, a single-celled organism
[6] that takes up residence in the bee's gut [and harms their health]. But scientists couldn't
[7] explain how sunflower pollen vanquished C. bombi—did it boost the bees' immune
[8] function, or perhaps poison the parasite directly?
[9] New research, published in the Journal of Insect Physiology, shows the answer is
[10] deceptively simple. "Sunflower pollen makes bumblebees poo a whole lot," says lead
[11] author Jonathan Giacomini, which flushes the parasite out.
[12] Plant products like nectar and pollen are a treasure trove of potential insect medicines
[13] that scientists are just beginning to understand, he adds. "There are natural things out
[14] there that bees are interacting with that can be beneficial for them," Giacomini says.
[15] And by making changes to the landscape, scientists hope we can help give bees a
[16] fighting chance.
[17] Plant power
[18] If you happen upon a fuzzy, buzzing, flying creature in eastern North America, there's
[19] a strong chance it's a common eastern bumblebee (Bombus impatiens). Yellow and
[20] black striped with a rump covered in soft hairs, they're social insects that live in
[21] colonies and love a good crevice—they build their homes in birdhouses, woodpiles,
[22] abandoned burrows, and dense grasses.
[23] [They] are important pollinators, both in the wild and in agriculture, where they're raised
[24] and used to pollinate crops including tomatoes and pumpkins. Like other pollinators,
[25] bumblebees face many threats, and C. bombi isn't even the biggest bumblebee
[26] bugaboo. On its own, the parasite doesn't have much of an effect on a bumblebee's
[27] health. But when food is scarce, C. bombi can shorten a bee's lifespan and even
[28] reduce the number of young queens a colony can produce.
[29] Lynn Adler is an evolutionary ecologist at the University of Massachusetts Amherst
[30] who studies interactions between plants and insects. For years, she and longtime
[31] collaborator Rebecca Irwin at North Carolina State University suspected pollinators
[32] might be getting dosed by flowers since plants often invest chemically active
[33] compounds into their nectar and pollen to help their genetic payload arrive at
[34] its destination.
[35] "Many plant defensive compounds can be medicinal at certain doses," Adler says. After
[36] all, "most of our human medicines come from plants."
[37] Giacomini discovered the effect of sunflower pollen as an undergraduate working in
[38] Adler's lab in 2018. From [these] very first tests, sunflower pollen dramatically reduced
[39] C. bombi parasite load in common eastern bumblebees, often clearing infection
[40] completely. "We've been shocked at how consistent and effective sunflower pollen
[41] has been," Adler says.
Elizabeth Anne Brown, National Geographic

In line 23, the word they refers to...


Exani II, Exani II -> Estructura de la Lengua

Relacione las palabras con el tipo de adverbio que utilizan.

Palabras:
1. Aún
2. Lejos
3. Fácilmente
4. Harto

Tipo de adverbio: 
a) Cantidad
b) Modo
c) Tiempo
d) Lugar


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