After reviewing the graph you posted above, there is one radioactive isotope that has a half life that is approximate to the same as the estimated time of the origin of Earth.
The radioactive isotope is called Uranium 238. You can also write this out as U-238 or uranium/u. Any of these are acceptable for the answer.
Answer:
Rural to urban migration represents people moving from village to town.
Explanation:
This causes the cities to grow and to be overcrowded. People migrate from countryside to town to find better life standard. They are in search for better jobs, vivid social life and run away from rural living. Unfortunately this causes the villages to be abandoned and be forgotten.
Answer:
Renewable resources.
Explanation:
Renewable resources can be defined as those natural resources that can be replenished naturally. Such natural resources are unlimited in nature and can be renewed naturally.
In simple terms, one can say that renewable resources are those natural resources that can be used regularly and will never run out as they can get renewed naturally. Some examples of renewable resources are sunlight, water, wind, etc.
Therefore, the correct answer is renewable resources.
The development of agriculture was set in motion by hitching animals to the plow. The correct option among all the options that are given in the question is the second option. At the beginning, people did not use animals for agricultural purpose, but with passing of time the utility of the animals for agriculture was understood and it made cultivation easy.
They began to form by a combination of volcanic activity and the deposit of marine sediments. It formed along northwest Africa about 530 million years ago. ... As the Appalachian Mountains eroded, sand and clay were deposited over Florida's limestone layer.
