I believe the answer is B.
when an animal dies and its body decays, it can leave an imprint in the sediment. If this imprint fills in with minerals from sediment and groundwater, it can harden to form a fossil. This fossil is called a cast fossil. The fossilized imprint is called a mold fossil.
Answer: B:17,190 years
Explanation: After 5730 years ( first half life) 70 /2 = 35 mg decays and 35 g remains left. After another 5730 years ( two half lives or 11460 years) 35 /2 = 17.5mg decays and 17.5 g remains left . After another 5730 years ( three half lives or 17190 years) 17.5 /2 = 8.75mg decays and 8.75g remains left.
i know this is off topic but, can you go to my quetions, to see if you can answer any?(or if you know anyone who can answer them)
Numerous scientific and technological advances were accomplished by the Ancient Greeks. Greek philosophers started to adopt new perspectives on the world. They developed hypotheses about how the universe operated and believed that the natural world adhered to a set of rules that could be observed and understood via research.
Pythagoras studied geometry. Pythagoras kept track of all the mathematical advancements that were accomplished in Greece over time. To determine the sides of a right triangle, he established the Pythagorean Theorem, which is still in use today.
Euclid was arguably the most significant Greek mathematician. Numerous works titled Elements were written by Euclid on the subject of geometry. For 2000 years, these texts served as the de facto reference on the subject. Sometimes referred to as the most influential textbook in history, Euclid's Elements.
To learn more about Pythagoras click here
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Tay-Sachs destroys nerve cells in the brain & spinal cord. Pku is a birth defect that causes amino acids to build up in the body. They are similar because you can get seizures from both & in both there is also slow growth.
