What is the oldest feature in this geological column PLEASE HELP ILL MARK BRAINLIEST:(

1. crust 1 the metallic layer at the earth's center 2. inner core 3 the firm layer between the crust and the asthenosphere 3. lower mantle 2 the layer surrounding the inner core 4. asthenosphere 4 the semi-solid layer between the top layer and the upper mantle 5. upper mantle 5 the layer between the asthenosphere and lower mantle 6. top layer 6 the earth's outermost layer 7. outer core 7 the hottest part of the mantle

Which of these is the sound of fish slapping against human flesh?

Fossils of glossopteris, an extinct fern, were discovered on which continents to support the theory of continental drift? check all that apply.