The Inca called their empire Tahuantinsuyu, or Land of the Four Quarters. It stretched 2,500 miles from Quito, Ecuador, to beyond Santiago, Chile. Within its domain were rich coastal settlements, high mountain valleys, rain-drenched tropical forests and the driest of deserts. The Inca controlled perhaps 10 million people, speaking a hundred different tongues. It was the largest empire on earth at the time. Yet when Pizarro executed its last emperor, Atahualpa, the Inca Empire was only 50 years old.
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This article and included graphs,from the web site accompanying the FRONTLINE NOVA special What's Up with the Weather?, reveals how atmospheric carbon dioxide, methane, and nitrous oxides from coal- and oil-burning power plants, cars, and other fossil-fuel-burning sources have climbed along with the world population, with as yet unknown effects on the climate system.
This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Materials - 2 clear plastic cups for each pair of students - 4 bean seeds for each pair - soil - unifix cubes - a plant or math journal to record data ...
The authors of the research presented in this special collection used the first description of the B73 maize genome to probe some of the most intriguing questions in genetics and plant biology. Read about maize centromeres, new insights into transposon types and distribution, the abundance of very short FLcDNAs encoding predicted peptides, and many other "genetic jewels" contained herein.
Removing seeds from newly picked cotton is not as simple as it sounds. Cotton is sticky when removed from the plant, and pulling the seeds from its grasp is difficult. Throughout the 1700s, cotton production was expensive because of the huge amount of labor necessary to remove the seeds. All was changed with the invention of the cotton gin. What once was painstakingly slow was now relatively fast. By the end of the 18th century, demand for cotton was increasing as power looms were able to turn out great quantities of cloth. With the cotton gin, southern cotton plantations could now supply the world's demand.
The railroads needed steel for their rails and cars, the navy needed steel for its new naval fleet, and cities needed steel to build skyscrapers. Every factory in America needed steel for their physical plant and machinery. Andrew Carnegie saw this demand and seized the moment.
As America grew, Americans were destroying its natural resources. Farmers were depleting the nutrients of the overworked soil. Miners removed layer after layer of valuable topsoil, leading to catastrophic erosion. Everywhere forests were shrinking and wildlife was becoming more scarce.
The growth of tobacco, rice, and indigo and the plantation economy created a tremendous need for labor in Southern English America. Without the aid of modern machinery, human sweat and blood was necessary for the planting, cultivation, and harvesting of these cash crops. While slaves existed in the English colonies throughout the 1600s, indentured servitude was the method of choice employed by many planters before the 1680s. This system provided incentives for both the master and servant to increase the working population of the Chesapeake colonies.
The development of Georgia was unlike all the other British colonies. First of all, it was the last to be created. Georgia was founded in 1733, 126 years after Jamestown was successfully planted. England and Europe as a whole were in the midst of an intellectual revolution known as the Enlightenment. Enlightened thinkers championed the causes of liberty and progress. Many believed in the innate goodness of human beings. They asserted that even the worst elements of society might prosper if given the right set of circumstances. James Oglethorpe was such a thinker. He and a group of charitable investors asked King George for permission to create a utopian experiment for English citizens imprisoned for debt. England's prison population could be decreased, and thousands of individuals could be given a new chance at life. With these lofty goals, Georgia was created.
This page provides an overview and details about the Wisconsin Fast Plants ProgramĺŐs Digital Library, a portal for browsing, searching, and cataloging resources.
- Material Type:
- Wisconsin Fast Plants Program
- Provider Set:
- Wisconsin Fast Plants Activity and Resource Library
- The Wisconsin Fast Plants Program
- Date Added:
Add acidity to a healthy lake and see what happens to the plants and animals in this interactive activity adapted from EcoKids. ***Access to Teacher's Domain content now requires free login to PBS Learning Media.
- Life Science
- Forestry and Agriculture
- Material Type:
- PBS LearningMedia
- Provider Set:
- PBS Learning Media: Multimedia Resources for the Classroom and Professional Development
- Teachers' Domain
- National Science Foundation
- WGBH Educational Foundation
- Date Added:
Developed for third grade. Students will:; understand the damaging effects of acid rain on the environment.; understand the damaging effects of acid rain on plants.; pose a hypothesis and use the scientific method.Biology In Elementary Schools is a Saint Michael's College student project. The teaching ideas on this page have been found, refined, and developed by students in a college-level course on the teaching of biology at the elementary level. Unless otherwise noted, the lesson plans have been tried at least once by students from our partner schools. This wiki has been established to share ideas about teaching biology in elementary schools. The motivation behind the creation of this page is twofold: 1. to provide an outlet for the teaching ideas of a group of college educators participating in a workshop-style course; 2. to provide a space where anyone else interested in this topic can place their ideas.
It's no secret that greenhouse gases warm the planet and that this has dire consequences for the environment whole islands swallowed up by rising seas, animal and plant species stressed by higher temperatures, and upsets in ecological interactions as populations move to cooler areas. However, carbon dioxide has another, less familiar environmental repercussion: making the Earth's oceans more acidic. Higher levels of carbon dioxide in the atmosphere mean that more carbon dioxide dissolves in the ocean. This dissolved carbon dioxide forms carbonic acid the same substance that helps give carbonated beverages their acidic kick. While this process isn't going to make the ocean fizzy anytime soon, it is introducing its own set of challenges for marine organisms like plankton and coral.
For the Principles of Accounting: Volume 2 Managerial Accounting, this video focuses on Chapter 6 (Activity Based Costing) using the Musicality, Inc. problem, exploring the calculations differences between Single Plantwide Overhead rate vs. Activity Based Costing. Covering the cost per unit / gross profit per unit only.
Students will plan and design an imaginary organism that lives in the Temperate Deciduous Forest, Tropical Rainforest, or Desert. Students will then identify three adaptations of this animal, and determine how the adaptations of that animal may respond to a change in the ecosystem.
***LOGIN REQUIRED*** The Agriscience/Intro to Agriculture course helps students acquire a broad understanding of a variety of agricultural areas, develop an awareness of the many career opportunities in agriculture, participate in occupationally relevant experiences, and work cooperatively with a group to develop and expand leadership abilities. Students study California agriculture, agricultural business, agricultural technologies, natural resources, and animal, plant, and soil sciences.
Mustard, cowpea, horse gram, and groundnuts are the seasonal pulse crops used as food and fodder in many regions of the world. In the present study, the impact of biofield energy treatment on mustard, cowpea, horse gram, and groundnuts were studied with respect to overall growth, yield, and its related yield attributes. Seeds of each crop was selected and divided in two groups, i.e. control and treated. The treated group of each seed crops was subjected to Mr. Trivedi biofield energy treatment, and were plotted in the separate fields. The plot with untreated seeds were provided with all the precautionary measures such as pesticides, fungicides and organic additives, while no such measures were taken in the plot with treated seeds. Both group of crops were further analyzed and compared for growth, yield, and yield attributes. Further, the effect of biofield treatment was also evaluated on horse gram using Random Amplified Polymorphic DNA (RAPD) analysis in order to determine their epidemiological relatedness and genetic characteristics. The results suggest that the percentage increase in yield was maximum in mustard (500%), followed by horse gram (105%), cow pea (52%), and groundnut (44%) as compared with their control. However, improved plant height, overall growth, yield of seeds, plants were free from any diseases and pest were observed in treated group as compared with its respective control. RAPD analysis using eight primers results in polymorphism and the percentage of true polymorphism observed between control and treated samples of horse gram seed sample with an average value of 53%. The overall results suggested that Mr. Trivedi’s biofield energy treatment has a significant impact on mustard, cowpea, horse gram, and groundnuts, which might be used as a better alternative approach to increase the yield of crop as compared with the synthetic chemicals.
Alcoholic Fermentation in Yeast – A Bioengineering Design Challenge Grade Level: 10thSubject: ALSAnimalsDuration: 90 minutesDOK Level: 3SAMR Level: Substitution Indiana Standard: ALSA-2.17 Describe cellular respiration. Recognize that animals perform only respiration, while plants perform both photosynthesis and respiration. Also, describe the transformation of energy during respiration, and the role of ATP produced in respiration for other metabolic processesObjective: Students will be able to explain the process of cellular respiration and design an experiment .Essential Question: What is the optimum sucrose concentration and temperature to maximize rapid CO2 production?Procedure: Handout the student lab sheet.Have the students answer the questions in part 1Have them draw the steps in part to in their research notebookHave the students complete the lab part 2Have the students record the results in their research notebookHave the students design and complete lab part 3Product or Assessment: Students will be assessed on their results in their research notebook. Credit: Cellular Respiration lab http://serendip.brynmawr.edu/sci_edu/waldron/Teacher Preparation Notes
In Florida's humid climate, strawberry growers are in a constant battle with two kinds of fruit rot. Using a decision support system, they can save money by spraying fields only when the plant diseases are a threat.