Well 1/2 because half is one whole and one whole is a half
Answer:
1 Down - Dating Fossils
3 Down- Fossil Layers
5 Down- Pangea
2 Across- Index Fossil
4 Across- Mesozoic Era
6 Across- Mass Extinction
7 Across- Time Scale
8 Across- Trilobite
Step-by-step explanation:
Answer:
find the difference. find the sum
Step-by-step explanation:
Up because the a term (which you cant see but its before the abs val.) is positive