During the Early Paleozoic Era,the Continent of Gondwanaland Included North

Q34: Cenozoic Phanerozoic Mesozoic Paleozoic

Q35: Planetesimals,asteroid-size objects,form during the early history of

Q36: The waste gas released by plants as

Q37: The bodies of our solar system began

Q38: Fossil fuels are abundant in Precambrian rocks.

Q40: Primitive organisms,called _,reproduce asexually and contain cells

Q41: In Rodinia,a well-documented Precambrian supercontinent,_.<br>A)there is no

Q42: Scientists have found evidence that life existed

Q43: On each continent,large "core areas" of Precambrian

Q44: The rock formations of the _ era