Upon what observation did kepler base his second law?

someone , im really confused : (

answer:

kepler's second law - the planets sweep out equal areas in equal times was based on his observations of mars. the second law is actually a continuation of the first law. here is a nasa link with a more in depth explanation and a few diagrams:

the offspring would all be white. if the parents are both white flowers then they have the genotype rr, which when crossed results in an all white punnet square.

you know they are heterozygous for a trait because they have it as jj or jj.