Some on help me I am on my last two in usatestprep

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

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.