What do scientists collect during their experiment? When conducting research, scientists use the scientific method to collect measurable, empirical evidence in an experiment related to a hypothesis (often in the form of an if/then statement), the results aiming to support or contradict a theory. What are some of the most famous or important chemistry experiments? […]
Is depression more common in females than males?
Is depression more common in females than males? About twice as many women as men experience depression. Several factors may increase a woman’s risk of depression. Women are nearly twice as likely as men to be diagnosed with depression. Depression can occur at any age. What percentage of people who are diagnosed with major depressive […]
What relationship did Henrietta Swan Leavitt Discover about Cepheid variable stars that made them useful as standard candles for measuring distances?
What relationship did Henrietta Swan Leavitt Discover about Cepheid variable stars that made them useful as standard candles for measuring distances? Leavitt showed that her variable stars, called Cepheids, could tell astronomers their true luminosity over the course of their cycle, no matter how bright they appeared from Earth. So, if a distant galaxy contains […]
How does entrepreneurship combat unemployment and improve the economy?
How does entrepreneurship combat unemployment and improve the economy? How does entrepreneurship reduce unemployment? As we’ve lightly touched on already, entrepreneurial enterprises provide citizens with paying jobs in order to operate and grow. Paying customers in these industries creates necessary business and jobs for people that work to meet these basic needs. How can entrepreneurship […]
Who won the Treaty of Guadalupe Hidalgo?
Who won the Treaty of Guadalupe Hidalgo? The Treaty of Guadalupe Hidalgo, signed on February 2, 1848, ended the Mexican-American War in favor of the United States. What did Nicholas Trist do? Nicholas Philip Trist was a diplomat who served as American consul to Cuba and helped to negotiate the end of the Mexican War […]
Why did Philip II have an advantage over Greek city-states?
Why did Philip II have an advantage over Greek city-states? Why did Philip II have an advantage over the Greek city-states? He unified the Greek city-states. He conquered the Persian Empire. He destroyed Macedonia’s military. How was Philip able to conquer most of Greece? How was Philip II able to conquer Greece? He organized his […]
What is subsistence farming in Africa?
What is subsistence farming in Africa? Roughly 65 percent of Africa’s population relies on subsistence farming. Subsistence farming, or smallholder agriculture, is when one family grows only enough to feed themselves. Without much left for trade, the surplus is usually stored to last the family until the following harvest. What are examples of subsistence farming? […]
How did improved irrigation practices help farmers?
How did improved irrigation practices help farmers? In areas that have irregular precipitation, irrigation improves crop growth and quality. By allowing farmers to grow crops on a consistent schedule, irrigation also creates more reliable food supplies. Ancient civilizations in many parts of the world practiced irrigation. Did ancient Japan have irrigation systems? The basic features […]
Is marginal utility the same as marginal benefit?
Is marginal utility the same as marginal benefit? Marginal utility describes the benefit that one economic actor receives from consuming one additional unit of a good, while marginal benefit describes (in dollars) what the consumer is willing to pay to acquire one more unit of the good. What is marginal cost and marginal benefit? A […]
Why are all resources scarce?
Why are all resources scarce? Even free natural resources can become scarce if costs arise in obtaining or consuming them, or if consumer demand for previously unwanted resources increases due to changing preferences or newly discovered uses. What do economists mean by scarcity? What do economists mean by scarcity? Economists mean that unlimited wants exceed […]