Well it is a type of depression that one would feel in a loss and sometimes it is not bearable.
There are so little evidences of what lives were during the prehistoric era. Most of our sources come from the biological and archaeological evidences gathered by different people. However, it is quite clear that the lives of people before were entirely depending on thinking that good is rewarded by a heavenly entity. This is very different from the laws today because of our aim to be more logical in decision making, etc.
Answer:
The Great Wall of China was not just a wall. It was an integrated military defensive system with watchtowers for surveillance, fortresses for command posts and logistics, beacon towers for communications, etc.
Explanation:
hope this helps:)
The correct answer in number one is "trees are cut down". Deforestation refers to the act wherein trees or forests are cut down and cleared for the land to be used for something industrial and non forest use.
In number two, the correct answer is "farming". Farming does not need deforestation. Farms are located in wide field, which has a huge land area for farming, which they do not need to clear trees/forests, sometimes farmers use the forests as parts of their farming methods.
In number three, the correct answer is "Carbon Dioxide". When trees begin to lessen, carbon dioxide will become greater in our atmosphere, since trees are the one responsible for absorbing and converting carbon dioxide to oxygen, without trees, it would increase the percentage of carbon dioxide in our atmosphere.