During the Devonian period of Gondwanaland what were the two organisms that thrived? A) algae and Trilobites
B) land invertebrates and dinosaurs
C) conifers and early mammals
D) angiosperms and humans
E) marine invertebrates and land plants

Which of the following statements is not true about regions? a.) regions have fixed boundaries that are determined by the region's inhabitants.b.) a region can be defined by physical characteristics, such as climate, landform, and vegetation.c.) regions can change over time.d.) a region can be defined by human characteristics, such as language, government, and economic activity.e.) the same location can be considered part of multiple regions.