Relative chronometric dating techniques

By measuring the amount of original and transformed atoms in an object, scientists can determine the age of that object.Cosmic rays: Invisible, high-energy particles that constantly bombard Earth from all directions in space.Before the advent of absolute dating methods in the twentieth century, nearly all dating was relative.

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Absolute dating methods are used to determine an actual date in years for the age of an object.

Eventually, the entire ecosystem (community of plants and animals) of the planet, including humans, is filled with a concentration of carbon-14.

As long as an organism is alive, the supply of carbon-14 is replenished.

When the organism dies, the supply stops, and the carbon-14 contained in the organism begins to spontaneously decay into nitrogen-14.

The time it takes for one-half of the carbon-14 to decay (a period called a half-life) is 5,730 years.

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  1. budak kan msti cipap berbau...sambil die g mandi bleh aku tgk blue kan......sambil aku tgk blue tu aku x perasan plak yang msa u si budak Ila nie kuar dari bilik air....sedar2 dak nie dah ada kat blkg aku pakaian yang die pakai td...tekeju beruk aku ms tu....takut jgk aku mana la tahu tembelang aku pecah plak nt..takut aku mula reda bla budak ni senyum n ckp " emmm segar rasa dah dpt mandi"....