I believe the first one is 'physical geography' :-)
Answer:
The Precambrian, Paleozoic, Mesozoic, and Cenozoic Eras
Explanation:
No because although the gravity would be weaker
Answer:
B. erupt underwater and thus cool very quickly
Explanation:
- The pillow basalts attain their distinctive shapes and are a blob type due to the their shapes of the parent lava formations that don't travel and not far before they solidify thus they are formed due to the underwater and erupt very quickly and thereby attain a distinctive shape. Being igneous in nature they have rapid cooling and look like pillows.