Using a molecular clock, clock, scientists are able to estimate the amount of time that two species have been evolving independently?

What is the sequence of amino acids corresponds with the rna strand ucg ggg cac

Which of the following is a possible reason for sleep? a) growth b)digestive c)speed d)intelligence

Astudent reads the following text in a science book: scientific evidence tells us that the cause of earths four seasons is the tilt of earth as it revolves around the sound the student is instructed to illustrate this information in a science book. how will the student illustrate winter in the northern hemisphere? a.earths northern hemisphere will tilt away from the sun. b. earths northern hemisphere will tilt toward the sun. c.earths orbit will be farther away than from the sun d. earths southern hemisphere will tilt away from the sun.