Sharks, whales, and dolphins share similar features such as body shape and the position of fins. However. sharks have gills for breathing while whales and dolphins have lungs. These differences Indicate that the organisms share a common ancestor for
Whales also possess a vestigial pelvic bone. The presence of the pelvis bone may Indlcate that whales

What does the positioning of transcription factors determine?

What is the definition for temperature inversion

High blood pressure occurs when there is too much blood flowing through the blood vessels at one time. by changing the amount of water in the blood, blood pressure can change. the excretory system can to lower blood pressure.which would most likely occur in the kidney? a)more water would be transferred from the nephron.b)less water would be absorbed into the nephron.c)the amount of water in the bladder would decrease.d)the amount of water in the blood would increase.