A. Filtration
This is because of the layers of Filter it goes through to make sure it is pure.
Answer:
Radiometric dating, often called radioactive dating, is a technique used to determine the age of materials such as rocks.
The half-life of carbon-14 is about 5730 years
<span>The Affordable Care Act which was instated during Barack Obama´s presidency and is sometimes known as Obamacare is justified by the phrase ¨for the general welfare¨ in the Preamble. This concept can be defined as holding the US government responsable for providing care for all people, not just a few elites. Therefore the Affordable Care Act, which aims to increase access to healthcare to all Americans is adhering to this phrase.</span>
