What is the main difference between primary and secondary succession? A. The climax of primary succession is pine forest. B. Primary succession begins with bare rock. C. Secondary succession begins with mosses and lichens. D. Secondary succession includes frequent fires.

answer; i believe the correct answer is (replication is not conservative);

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation:

energy and particles

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?