A half life is the amount of time it takes for half of an isotope to decay in a given sample. The half life of carbon 14 (which is an isotope) is 5730 years. Carbon-14 is present in many fossils, hence scientists use this to figure out the age of fossils, this specific usage is called carbon dating.
Answer:
First aid is a first help given to an injured person
And first aider is a person who gives first aid
Explanation:
<h2>
<em><u>I </u></em><em><u>hope</u></em><em><u> that</u></em><em><u> helps</u></em><em><u> you</u></em><em><u> and</u></em><em><u> please</u></em><em><u> mark</u></em><em><u> my</u></em><em><u> answer</u></em><em><u> as</u></em><em><u> the</u></em><em><u> brainliast</u></em><em><u> </u></em><em><u>answer.</u></em><em><u>i</u></em><em><u>t</u></em><em><u> </u></em><em><u>would</u></em><em><u> be</u></em><em><u> an</u></em><em><u> honor</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em></h2>
Sasha recently discovered an armpit lump
The answer would be pubic hair. Because, secondary sexual characteristics.
Visible secondary sex characteristics are nonreporductive sexual characteristics.
For males things that will start to show are pubic hair, facial hair, and Adam's apple.
