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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

Are the earth's ocean floor and continents the same age geologically? why or why not?

The response is the basis for vaccination. primary secondary tertiary none of the above