Answer:
There were an estimated 18 million Native Americans living north of Mexico at the beginning of the European invasion. Prior to the arrival of the Europeans, American Indians were remarkably free of serious diseases. People did not often die from diseases. As the European explorers and colonists began to arrive, this changed and the consequences were disastrous for Native American people. The death tolls from the newly introduced European diseases often reached 80-90 percent. Entire groups of people vanished before the tidal wave of disease.
Explanation:
The diseases brought to this continent by the Europeans included bubonic plague, chicken pox, pneumonic plague, cholera, diphtheria, influenza, measles, scarlet fever, smallpox, typhus, tuberculosis, and whooping cough. The diseases introduced in the Americas by the Europeans were crowd diseases: that is, individuals who have once contracted the disease and survived become immune to the disease. In a small population, the disease will become extinct. Measles, for instance, requires a population of about 300,000 to survive. If the population size drops below this threshold, the virus can cause illness and death, but after one epidemic, the virus itself dies out.
Another important factor in the European diseases was the presence of domesticated animals. The source of many of the infections was the domesticated animals which lived in close proximity with the humans.
Overall, hundreds of thousands of Indians died of European diseases during the first two centuries following contact. In terms of death tolls, smallpox killed the greatest number of Indians, followed by measles, influenza, and bubonic plague.
Answer:
The answer to this question, and especially the text that your question aludes to, can be found on the lumenlearning website, and it says this: that all beings have a three-step process of learning that explains how an organism develops the capacities to behave and act accordingly, depending on the conditions around it. These three steps are: classical conditioning (Pavlovian conditioning), operant conditioning, and finally, observation. All organisms go through these steps to learn how to behave and act in an environment.
Classical conditioning is simply the way that an organism is taught how to respond by association. As an organism experiences its environment, it observes different events and learns how to associate cause and consequence, or responses, to stimuli. During operant conditioning, an organism also associates and also learns that producing a behavior brings either reward, or punishment, and observation is how an organism learns to act through observation and imitation of others.
To me, learning is a much more complex process, in which, all the experiences taken in by an organism, the environment, and also genetics, play all a role together in the way this organism processes all and acquires knowledge and produces responses to that knowledge. But I agree with these theories that all organisms go through steps. You see it with babies. They first learn to act through what they observe, but as intelligent and sapient beings, they too can learn to produce behavior outside of what was observed, or conditioned in them. So, in animals and other beings the three steps mentioned above might work, but not necessarily in humans.
Explanation:
Roman roads were a vital part of the development of the Roman state, from about 500 BC through the expansion during the Roman Republic and the Roman Empire. Roman roads enabled the Romans to move armies and trade goods and to communicate. The Romans became adept at constructing roads, which they called viae. Therefore advancing Rome greatly.
What I love about Black Violin is they work together to make a hip-hop duo in Florida comprising two classically trained string instrumentalist
An experimenter flashes the word HERON across the visual field of a man whose corpus callosum has been severed. HER is transmitted to his right hemisphere and on to his left hemisphere. When asked to indicate what he saw, the man says he saw ON but points to HER.
