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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
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[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 38, the expression these very first tests refers to the experiments that were carried out by...

Un cuerpo cae desde 20m de altura ¿Con qué velocidad choca contra el suelo? CONSIDERA g=9.8m/s2

¿Cómo se llama la etapa económica que comprende desde el gobierno de Miguel de la Madrid hasta Carlos Salinas de Gortari?

Dado el siguiente triángulo ¿Cuánto vale el ángulo A?

El valor de es:

Ecosistema que se caracteriza por tener una flora de Cactáceos y rocas.

Si la levadura se reproduce por fisión binaria ¿Cómo son las demás levaduras?

¿Cuál es la corriente eléctrica que circula a través de un resistor de 40Ω, si la tensión entre sus extremos es de 120V?

¿Qué tiene mayor aceleración en linea recta y el mismo intervalo de tiempo, un auto cuya rapidez aumenta de 50m/s a 60 m/s o una bicicleta que pasa de cero a 10m/s?

Ordena cronológicamente los siguientes acontecimientos.
I. La prisión de Moctezuma.
II. La Malinche y Gerónimo de Aguilar se unen a la
expedición de Cortés.
III. La matanza del templo mayor.
IV. La llegada de Pánfilo de Narváez.
V. El suplicio de Cuauhtémoc.