Cetaceans are whales and their relatives. Which statement provides the best evidence that Ambulocetus natans is an ancestor of Basilosaurus isis?
Help.
A. Homologous structures occur in each fossil.
B. Similar nitrogenous bases are found in the DNA of each fossil.
C. The youngest fossil is larger than the older fossils.
D. The fossils were found in different locations.

identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.