I believe the answer is A
When the ride is at the top of its pole, it has all potential energy. When it is in the middle, at 34 meters, it has 50% potential energy and 50% kinetic energy. When the ride is almost at the bottom, it has kinetic energy that turns into potential energy as it reaches the end.
B) cell because all living things are made up of cells
This isn't possible except you have a system where there isn't competition and the survival of the fittest in the aspect of the food chain
Based on DNA sequences, it is believed that changes in nucleotide sequence between two species are equivalent to the time that has elapsed since the two species diverged from their common ancestor. Gene sequencing is being used in addition to morphology to determine evolutionary relationships between organism. Homologous sequences show greater evolutionary relationship