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.
The area of the Balkan countries is frequently plagued by ethnic conflict that generates tension among the nations. This tension has given away to several small conflicts and the trend continued. The location of the Balkans is strategically very important. I hope the answer helps you.
Answer:
At the equator, the sun is directly overhead at noon on these two equinoxes. The "nearly" equal hours of day and night is due to refraction of sunlight or a bending of the light's rays that causes the sun to appear above the horizon when the actual position of the sun is below the horizon.
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The Sun is lowest in the sky with less radiation in the Northern Hemisphere during the winter solstice.
Explanation:
The Earth is not static, but instead it is involved in several different motions. One of those motions is the Earth's tilt. Basically, the Earth is tilted with one of its hemispheres (northern or southern) toward the Sun in half of the year, and then in the other half of the year it is tilted with the other hemisphere toward the Sun.
When one of the hemispheres, lets say the Northern Hemisphere, is tilted away from the sky, and that reaches the maximum, it receives the least solar radiation, and the Sun is the lowest on the sky. That occurs on 21 or 22 December, and it is known as the winter solstice. This date represents the start of the winter for the Northern Hemisphere, thus its coldest period of the year.
The four stages on Earth caused by the tilting are:
- spring equinox
- summer solstice
- autumn equinox
- winter solstice
Learn more about the Earth's tilt and its effects brainly.com/question/3375314
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