Four locations on earth receive sunlight at different angles. Which of the following angles for the intensity of sunlight received be the greatest?

a) 90 degrees
b) 75 degrees
c) 50 degrees
d) 25 degrees

Embryonic stem cells are cells derived from an embryo. these cells can be used to create new tissues for patients suffering from certain illnesses and disorders. which statement best summarizes why the use of embryonic stem cells could be seen as unethical?

Scientists discover two populations of mice on either side of a major river. the two populations have almost identical genes but the mice from one side cannot breed with mice from the other. this is most likely because

Where does the information about where each transcription factor binds originate?