A pedigree or a pedigree chart is used to track which organisms are carriers of a specific trait through several generations.
C.
The answers are principles C and D. After the big bang, particles in gas clouds were closer to each other and clumped up faster. As they clumped together, they gained more gravitational force, eventually creating asteroids, stars, and planets.
Uranium is not a fossil fuel.
Assuming it's only salt water, it should be 85%
