Radiometric dating or radioactive dating is a technique used to find materials such as igneous or gas, in which look impurities were selectively incorporated when they formed. The method compares the abundance of a naturally occurring radioactive isotope within the material to the abundance of its decay products, which form at a known constant rate of decay.
Answer:
The correct answer is <u><em>D</em></u>. Birthrates drop, and may even drop low enough to reverse population growth.
This statement is true.
The northeast and the Great Lakes regions have a natural habitat suitable for dairy farming. The climate, the precipitation, the grasslands, the water, all make a nice environment for dairy farming. But dairy farming is also making a problem because it causes eutrophication of the water and rise in algae population, thus reducing the oxygen in the water and killing of the fish, so a measures have to be taken so that process stops.
