Changes in the earth's climate caused ice sheets to grow and cover most of Canada and some of the northern US almost 15 000 years ago. This is known as the last Ice Age. For the last two million years, the earth has shifted between ice ages and warmer periods. Ice ages are caused by slight changes in the way the earth orbits around the sun. Huge continental glaciers or sheets of ice moved down from the Artic and covered Canada, North America and much of Europe.
Most likely to hunt for food or to build housing
The agricultural revolution was a period of change in the production system in Europe between the 18th and 19th centuries. This is called the second agricultural revolution.
The contemporary agricultural revolution occurred with the increase of technologies to the techniques previously applied.
The goal was to increase production and productivity. The results were obtained through techniques such as crop rotation, seed diversification and equalization of livestock space.
In England a law was passed that allowed the purchase of public fields by the upper bourgeoisie. The act forced the migration of small farmers to the cities.
These workers would later be the labor that would supply the factories during the Industrial Revolution
Answer:
b. stimulus generalization.
Explanation:
According to a different source, these are the options that come with this question:
a. spontaneous recovery.
b. stimulus generalization.
c. stimulus discrimination.
d. extinction.
In classical conditioning, stimulus generalization occurs when a person who has been conditioned to a particular situation will exhibit similar responses when exposed to a similar situation. For example, if a person fears rats, he might become fearful when he sees objects that resemble rats. In this example, the commands "speak" and "sit" are very similar to the dog, which leads him to have a similar reaction to both of them.
Answer:
There are 3 major parts of the respiratory system: the airway, the lungs, and the muscles of respiration. The airway, which includes the nose, mouth, pharynx, larynx, trachea, bronchi, and bronchioles, carries air between the lungs and the body's exterior.
