Answer:
The ancient Egyptians were far from primitive. They were some of the best inventors of their time, creating technology that surpassed that of other civilizations during this time period.
Explanation:
- Around 3000 BC, Egyptians discovered how they could make bronze, which was far more durable than other metals during that time. This innovation started the Bronze age.
- Ancient Egyptians were among the first groups of people to write and to keep records.
- The ancient Egyptians turned the Cyperus papyrus plant into sheets which could be rolled into scrolls. They basically created the first paper.
- To write on the newly invented paper, they created ink made for writing.
- The Egyptians devised a highly accurate solar calendar by recording the yearly reappearance of the star Sirius (the Dog Star) in the eastern sky.
- The Egyptians used obelisks as sundials, by observing how shadows cast by the obelisk moved around them during the course of the day. This acted as a clock.
Answer:
The idea that smiling when you are not necessarily joyful can actually improve your mood, is called the facial feedback hypothesis. The first experiment to test this was performed in 1988 and involved three different subject groups holding a pencil in different ways, in their hand or in their mouth vertically or horizontally (making them smile or frown). They then viewed cartoons and recorded how funny they were. The group who was smiling found them the funniest and the group that was frowning did not appreciate them as much. Not only can smiling make you happier but you could potentially better your mood by walking in a more jovial manner. Smiling is contagious because mirror neurons which help us to empathize with others, so not only could smiling help you but also others around you. Some other benefits of smiling include: decreased stress, lowered heart rate, lowered blood pressure and longer life span.
Explanation: 100%
Answer:
The answer is "homeostasis."
Explanation:
Homeostasis <em>is the dynamic state of equilibrium which allows an organism to have a stable internal condition while resisting natural changes in the external environment. </em>Having a stable condition allows the organism to function normally in order to survive. <u><em>This also allows the body to maintain certain levels of oxygen, pH and core body temperature.</em></u>
<em>In the case above, although the temperature outside is 31 degrees, John maintains a temperature of 98 degrees, which is higher than the outside environment, in order for his cells, tissues and organs to function normally.</em>
If his body fails to achieve a homeostatic condition, then he'd die.
Answer:
Overweight/obese
Explanation:
This man is overweight according to the BMI scale. Note that the BMI scale does not account for body fat percentage/distribution, so it is not a true indicator of someone's health.
18.5-24.9 is considered normal and anywhere from 25-29.9 is considered overweight
