Some of the dominant marine reptiles of the Mesozoic were reptiles whose ancestors had evolved on land, but returned to life in the sea. What physiological evidence supports this interpretation?
What will be an ideal response?
Answer: Structure of the fins (same structure as reptile legs/feet) and the development of lungs to breathe air.
You might also like to view...
In typical, fairly deep, temperate zone lakes, the vast majority of animals are found in the
a. benthic zone b. profundal and benthic zones c. limnetic zone only d. limnetic and littoral zones e. littoral zone only
If uplift of the land occurs, a wave cut platform may become a new ________
Fill in the blank(s) with the appropriate word(s).
Which of the numbers listed below best represents the percentage of thunderstorms that produce tornadoes?
A) nearly 25 percent B) slightly more than 50 percent C) fewer than 1 percent D) about 10 percent
Although tropical rain forests are only about 2% of the earth's land surface, they contain about 50% of the world's land plant and animal species.
Answer the following statement true (T) or false (F)