Fossils provide scientists with evidence that allows them to hypothesize how living organisms have evolved over time. tiktaalik roseae was a unique organism that has been shown to be 375 million years old. it has been nicknamed the “fishapod” because it is believed to be a common ancestor of both fish and tetrapods, the first four-legged animals. mc023-1.jpg how would a scientist study the relationship between the tiktaalik roseae and modern fish and tetrapods? create a diagram that hypothesizes ancestry use relative dating use transitional fossils to determine age review its analogous structures

Read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. applying the biological species concept, the sterility of ligers reveals that a. lions are probably a subspecies of tigers b. tigers and lions are the same species c. a new species called "ligers" is forming d. tigers and lions are separate species

Using meiosis, the sporophyte produces spores that are .

Which of the following graphs have the same wavelengths