History of the Planet - revision 0.0 / 5 ? GeographyHistory of the PlanetUniversityNone Created by: P GREENWOODCreated on: 05-04-17 16:52 9368251107 Across 1. to make elements heaviers than Fe requires energy made (2, 7, 7) 2. These feedbacks can interact to produce a system that (10, 0) 6. 50,000 years ago - (9, 10) 7. Rising atmospheric oxygen increases the ventilation of the water column, counteracting anoxia (1, 8, 8) 8. Homo sapiens in Africa – (0, 6, 5, 4) 9. Hence the supply of phosphourous, ultimately from (10, 2, 5) 10. Organic Carbon = (7, 6) Down 2. Which of the following was not present in large amounts in the Earth's first atmosphere: (6) 3. Calcium carbonate (8, 6) 5. H and He were manufactured after (3, 3, 4)
Comments
No comments have yet been made