Question

1. according to the text, what happens when organisms cannot adapt to changes in their environment? a. they move to another environment. b. they risk dying out. c. nothing happens. d. they wait for the environment to change again. 2. what does the author mainly describe in the text? a. how natural selection changed the population of peppered moths b. how the industrial revolution improved the lives of workers c. how charles darwin developed his theory of natural selection d. how humans influence organisms via artificial selection 3. smoke given off by the factories threatened the survival of the light - gray peppered moths. what evidence from the text best supports this conclusion? a. soot is a black substance that collects on a surface that comes into contact with smoke. b. when coal burns, it gives off a lot of dark - colored smoke. c. predators could see the light - gray peppered moths on the black trees covered by soot and easily hunt them down. d. the trees began to blacken with soot because of all of the smoke in the air from the factories. 4. what conclusion can be drawn from the changes in population of light - gray peppered moths and dark - colored peppered moths? a. the color change had nothing to do with the change in environment. b. there were previously no dark - colored peppered moths. c. the light - gray peppered moths adapted to a new environment. d. darker coloring is generally better for the peppered moths survival.

Explanation:

1. Cuando los organismos no se adaptan a cambios en el entorno, corren el riesgo de extinguirse. Esto se basa en la idea fundamental de la selección natural.
2. El texto parece centrarse en cómo la selección natural afectó la población de polillas moteadas, ya que menciona factores ambientales y su impacto en la supervivencia de diferentes tipos de polillas.
3. La evidencia de que los depredadores podían ver fácilmente las polillas moteadas claras en los troncos negros cubiertos de hollín indica que el hollín de las fábricas era un problema para su supervivencia.
4. La disminución de la población de polillas moteadas claras y el aumento de las oscuras sugiere que las polillas oscuras se adaptaron mejor al nuevo entorno contaminado.

Answer:

1. B. Ellos corren el riesgo de extinguirse.
2. A. cómo la selección natural cambió la población de polillas moteadas.
3. C. Los depredadores podían ver las polillas moteadas claras en los troncos negros cubiertos de hollín y las podían cazar fácilmente.
4. C. Las polillas moteadas claras no se adaptaron al nuevo entorno.