15. on a television talk show, a guest claims that
people who exercise vigorously for 15 minutes
or more every day are able to solve math
problems more rapidly than people who have
no vigorous exercise in their daily routine.
describe a controlled experiment that could
be conducted to test this claim. in your
description be sure to:
". state the purpose of the experiment [1]

The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards.the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote

Which rate indicates the number of children that would be born per women if she were to live to the end of her child-bearing years

Which chemical bond most likely stores the most energy? o a. double carbon-carbon bond o b. single carbon-carbon bond o c. hydrogen-oxygen bond o d. sodium-chlorine bond