Watch dating on earth
"This is the first time snakes have been filmed hunting en masse," the producers said. Catch the next episode of Planet Earth II, Sunday at 8pm on BBC1. Antanasia Dragomir, renamed Jessica Packwood by her adopted parents, is a down-to-earth farm girl with a talent for mathematics and a resolute disdain for all things supernatural.C14 is a radioactive isotope that's made when cosmic rays bombard nitrogen atoms at high altitudes, converting them to this excited form.When some living things, like plants and algae, make their own food through photosynthesis, they take in carbon dioxide from the air.Trace amounts of C14 make up a tiny percentage of that carbon dioxide, and it's integrated into the tissues of the organism.Planet Earth II might be the only thing 2016's got going for it – but even the dulcet tones of David Attenborough couldn't lessen the horror of watching a baby iguana being attacked by multiple snakes.
That lizard managed to escape – but now BBC bosses have released new behind-the-scenes footage of one that wasn't so lucky.But when it reaches a rocky outcrop, the snakes spring out en masse and capture it – then one snake swallows it whole. If this doesn't make you want to take an immediate shower, we don't know what will.The Earth is 4.54 billion years old; 3.8 billion years ago, the very first life form came into existence; 225 million years ago, dinosaurs came on the scene; and man took his first steps in Africa 200,000 years ago. Carbon-14 and other radioisotopes are used to measure the age of fossils, rocks, and other materials that make up Earth's geologic history. But at any given time, there are trace amounts of carbon-14, or C14, in the atmosphere. And they contribute to the hundreds of lines of evidence supporting Charles Darwin's theory of evolution, which continues to stand the test of time. See, all living things contain carbon, which has six protons and six neutrons, so in its typical form, we call it carbon-12. The Earth is 4.54 billion years old; 3.8 billion years ago, the very first life form came into existence; 225 million years ago, dinosaurs came on the scene; and man took his first steps in Africa 200,000 years ago. In 1960, Willard Libby won a Nobel Prize for developing this technology.
One of the ways that researchers measure the age of organic material is through carbon-14 dating.