What investigations never involve hypotheses.

Which of the following is most important in making the typical seed more resistant to adverse conditions than the typical spore? a) a different type of sporopollenin b) an internal reservoir of liquid water c) integument(s) d) ability to be dispersed e) waxy cuticle

Which geologic feature would most likely be represented by contour lines john far apart from one another? a cliff a hill a plain a valley

The influenza virus cause the flu, but not other diseases. why?