Select the statements about the K-T boundary that are true. Select all that apply. Select all that apply. a. The K-T boundary dates to 65 million years ago (when the dinosaurs disappeared). b. The K-T boundary separates rock layers of the Cretaceous period from those of the Tertiary period. c. The K-T boundary is a thin layer of clay found only in Gubbio, Italy. d. The K-T boundary in Zumaia, Spain is sharp--representing an abrupt chan
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Geography, 23.06.2019 00:40
Which of the following statements best characterizes changes to agriculture in the united states since 1900? a. increased mechanization has reduced the need for labor.b. increased mechanization has increased the need for water, thereby increasing the need for labor.increased mechanization has increased the use of land, thereby increasing the need for labor.d. increased mechanization has increased food production, thereby increasing the need for labor. select the best answer from the choices provided.
Answers: 3
Geography, 23.06.2019 01:30
What is the approximate chemical composition of the solar nebula?
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Geography, 23.06.2019 19:50
Select the correct answer.look at this nineteenth-century illustration of london. which explanation best relates this illustration to changes in britain in the 1800s? a.factory workers in cities lost their livelihood because of the lack of housingb.industrialization narrowed the inccome gap between landowners and workers.c.the migration of workers from rural to urban areas resulted in overcrowded citiesd.the spread of railways allowed farmers to sell produce far from where it was grown.
Answers: 1
Geography, 24.06.2019 06:30
Based on what you know about speed of light and sound, which come/comes first in a thunderstorm
Answers: 1
Select the statements about the K-T boundary that are true. Select all that apply. Select all that a...
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