Which of these best matches a source of information with its most reliable use?

petrified fossils → date sedimentary rocks
petrified fossils → compare the evolution of completely soft-bodied organisms
cladogram → date events which occurred in earth's past
cladogram → cause structural changes in organisms based on adaptation

The right answer is A.

Petrified fossils are remnants of organisms that harden during their fossilization. We only find hard tissues. These remains of organisms usually retain their original form.

Fossils provide information on the different forms of life that have marked the history of the Earth. They also help us learn about the changes that have marked Earth's evolution. Their age can be determined by determining which stratigraphic layers they are in.

a axis of a graph is a color or shade so we can all go outside and have a party so we can eat   some grilled cheese sammiches and broccoli and have some ugly fun times

i don't know why i put this, i know its not the i was just bored : p

delete this answer while you can

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.