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UNAM -> MATEMÁTICA SIMULADOR PARA LA UNAM

¿Cuál es el dominio de la función f(x) = √x − 3?

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Exani II, Exani II -> Estructura de la Lengua

¿Cuál es el sinónimo de la palabra en cursivas?

He conocido un niño de ocho años cuya infalibilidad al juego de pares y nones producía general admiración.

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UNAM -> MATEMÁTICA SIMULADOR PARA LA UNAM

La característica común que comparten todas las rectas de la forma y = -2x + b, donde b es un número real cualquiera es que son:

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UNAM -> FISICA SIMULADOR PARA LA UNAM

¿Cual seria la masa de un individuo de 50Kg en un planeta 3 veces más grande que la Tierra?

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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

Who supports the idea that many human medicines are made of natural sources?

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UNAM -> ESPAÑOL SIMULADOR PARA LA UNAM

Palabras con ortografía correcta.
1. subrayar
2. autorrealización
3. honra
4. alrededor
5. subrrayar
6. Honrra
7. alrrededor

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UNAM -> FISICA SIMULADOR PARA LA UNAM

Una persona jala un juguete con dos fuerzas horizontales, la primera fuerza es de 20N a 0° y la segunda es de 15N a 180°. Calcula la fuerza
resultante y su dirección.

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