alfred circulatory crust deformation drift ferns heart hornworts lichens liverworts mosses mushroom plants pulmonary spores symbiosis tectonics tension toadstool transform vascular veins vena volcanoes wall wegener View all
alfred arteries cava circulatory compression continents crust deformation drift earthquakes faults ferns fungi fungus hanging heart hornworts lichens liverworts mosses mushroom mycorrhizae nonvascular plants plates pulmonary seedless spores symbiosis systemic sytstem tectonics tension toadstool transform vascular veins vena vertical volcanoes wall wegener less