A planet has an average distance to the sun of 0.66 AU. In two or more complete sentences, explain how to calculate the orbital period of the planet and calculate it.

i'd say that the moon rock is about 2.2 billion years old.

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.