4. Explain: The change in the circled offspring's genotype was caused by a mutation. A mutation is a change in a gene. Mutations happen when a mistake is made when a cell's
chromosomes are copied. How might mutations introduce variation into a population?

How is the composition of a meteorite relevant to finding out the composition of earth's core?

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.