Resolver Preguntas

A continuación, se presenta una lista de palabras parónimas. Léelas y relaciónalas con su
significado.

1.- Preposición 2.- Proposición 3.- Inflación 4.- Infracción

a) Exposición de una idea b) Quebramiento de ley c) Aumento general de precios d) Termino gramatical

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

What effect does sunflower pollen have on bumblebees?

Número de átomos en dos moles de azufre.

Relacione las macromoléculas con sus respectivas funciones.

Macromolécula	Función
1. Carbohidrato 2. Lípido 3. Proteína	a) Regula las reacciones dentro del organismo
	b) Es la fuente principal de energía
	c) Sirve como reserva de energía

Con base en el siguiente sistema de vectores, ¿cuál es la magnitud del vector resultante?

Lea el texto y responda las preguntas

Si bien la imagen típica de un brujo o de una bruja es muy variable en función de cada cultura, en el acervo popular del mundo occidental la representación de una bruja se asocia fuertemente hoy en día a la de una mujer con capacidad de volar montada en una escoba, así como con el Aquelarre. En la cultura popular, la escoba era y es un atributo de actividades femeninas, y su utilización por parte de las brujas naturalmente inducía a pensar que ellas eran mucho más numerosas que los brujos. Por lo general se creía que las brujas volaban de noche, con frecuencia con luna llena, pues ambas, luna y bruja, estaban relacionadas entre sí. La bruja es un personaje recurrente de la imaginación contemporánea, que perdura y se afirma gracias a los cuentos, las novelas, las películas, así como a través de ciertas fiestas populares.

De acuerdo con el texto, la imagen de la bruja perdura gracias a...

En el siglo XIX ¿Qué se buscaba con el imperialismo colonialista?

Cuando se utilizan clorofluorocarbonos, ¿Qué capa de la tierra se ve afectada?

Relacione los tipos de acciones racionales con los ejemplos correspondientes.

Acción

Ejemplo

Con arreglo a valores Con arreglo a fines

a) Participar en las jornadas de limpieza de la escuela para evitar los contagios por el covid-19 b) Ser puntuales en la reunión de fin de año como estipularon los compañeros de grupo c) Realizar las aportaciones a la congregación para celebrar en tiempo un enlace matrimonial d) Recabar las firmas necesarias para apoyar a la Asociación de Protección al Medio Ambiente e) Encabezar la procesión familiar a la Basílica como cada año, en agradecimiento por lo obtenido

Proceso de fusión nuclear.