Sharks, Wales, and dolphin share Similar features such as body shape in the position of fence. However, sharks have gills for breathing, or whales and dolphins have lungs. These differences in the key to the organisms share a common ancestor for blank. Where was also possess a vestigial pelvic bone. The presence of this pelvis bone me indicate that whales blank.

Which organelle releases chemicals that break down large food particles into smaller ones?

What is the difference between the conducting zone and the respiratory zone of the respiratory system? the conducting zone is a series of cavities and tubes that move air to the respiratory zone where gases exchange with the bloodstream. the conducting zone exchanges gases between the lungs and the alveoli and the respiratory zone is a series of cavities and tubes that move air to the conducting zone. the conducting zone moves oxygen into the cells and the respiratory zone takes carbon dioxide away from the cells. the conducting zone moves oxygen into the bloodstream and the respiratory zone takes carbon dioxide away from the bloodstream.

Select the situation bellow that would produce a total displacement of zero. a. a trip to the moon and then to mars b. a horse galloping from one end of a field to another c. the criss-crossing path of a bug as it flies from flower to flower d. a round-trip ride to school and back