Resolver Preguntas

En la siguiente frase, seleccione la opción que señala correctamente las palabras que deben
escribirse con acento: NO₁ ESTES₂ LEJOS₃ DE₄ MI₅ UN₆ SOLO₇ DIA₈ PORQUE₉ COMO₁₀
NO₁₁ SE₁₂ DECIRLO₁₃ ES₁₄ LARGO₁₅ EL₁₆ DIA₁₇

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 25, the word face refers to the...

Identifique la situación que se relaciona con un condicionamiento operante.

A qué corriente literaria corresponde el siguiente fragmento.

Este era un rey que tenía
un palacio de diamantes
una tienda hecha de día
y un rebaño de elefantes,
un kiosko de malaquita,
un gran manto de tisú,
y una gentil princesita,
tan bonita, Margarita,
tan bonita, como tú.

Relaciona las columnas con las etapas de la revolución.
1. Antecedentes
2. Inicio
3. Constitucionalista
4. Etapa de reconstrucción
A. Álvaro Obregón y el plan de Agua Prieta
B. Venustiano Carranza y constitución de 1917
C. Huelga de Carranza, Río blanco y partidos de
oposición.
D. Maderista, decena trágica, plan de San Luis y
movimiento zapatista.

¿Cuál es el periodo de f(x) = sen (2x)?

Elija el sinónimo de la palabra en negrita.

Los agradables anfitriones hicieron pasar a los invitados al gran salón, donde se celebraría el baile.

La estructura básica de una neurona comprende cuatro regiones, dentro de las cuales está _______, cuya función principal es transportar información del cuerpo celular a los botones terminales.

¿Cuántos cubos chicos faltan para armar un cubo grande de 4x4? 

Ocurre principalmente en las reacciones de oxidación. Cuando éstas son intensas pueden generar fuego. Si dos átomos de hidrógeno reaccionan entre sí e integran una molécula.