<span>And igneous rock sample is about 250,000 years old. Would you use uranium-lead radiometric dating to find its age?
Yes, wikipedia says "</span><span>It can be used to </span>date<span> rocks that formed and crystallised from about 1 million years to over 4.5 billion years ago with routine precisions in the 0.1–1 percent range.</span>"
Therefore, 250,000 years can be compared
It is true indeed. Hit that thanks button if this helped. C:
<span>True. When oxygen increases, an increase in aerobic organisms also occurs. The increase in atmospheric oxygen favors the appearance of these organisms. The increase in atmospheric oxygen favors the appearance of aerobic organisms. There are several consequences in the evolution of organisms that could use oxygen as the plants that are the main factories of oxygen in the earth and depend on atmospheric CO2 (photosynthesis).</span>
I can help with 2:
The consequences of not investing in renewable resources depends more on where the funds are actually going: Nuclear energy is a safe and reliable alternative, however, if the funds are directed to fossil fuel energy for instance, the economic results can be negative.
Let me know if have any other questions.
1)Japan 2)South Korea 3)China 4)North Korea
Not completely sure because we don't really know anything about North Korea but this is my guess :)