Age of fossils is determined by carbon dating method. A body has some carbon atoms which usually decrease on the death of a body
Chargaff's law is a rule that in DNA there is always equality in quantity between the bases A(adenine) and T(thymine) and between bases G(guanine) and C(cytosine). They were discovered by Austrian chemist named Erwin Chargaff. Composition of DNA varies from one species to another.
Answer:
Vaccines fight outbreaks by creating heard immunity. If more people are innoculated against the virus then they protect vulnerable populations from getting sick
Explanation:
The muscular system allows for movement within the body, for example, during digestion or urination. Smooth muscles in the gastrointestinal or GI tract control digestion. The GI tract stretches from the mouth to the anus. Food moves through the digestive system with a wave-like motion called peristalsis.
A narrow valley is formed. Hope this helps :)
