A) toilsome
Toilsome: characterized by effort to the point of exhaustion; especially physical effort
Pangaea was a giant continent, it had almost all the continents we know as today. Pangaea later broke apart because of the plate tectonics and Africa separated from South America, India separated from Antarctica, North America separated from Europe, Australia moved away from Antarctica, and India moved away from Madagascar. India also later ran into Eurasia forming the Himalayas.
Answer:
Hey there!:
CaTiO3
*The corners are shared by 8 adjacent neighbors so only contribute 1/8 each,thus 1 Ca in the unit cell .
*The center is totally encased in the unit cell, thus 1 Tiin the unit cell
.
The faces are shared by 2 adjacent neighbors so onlycontribute 1/2 each
6 * 1/2, thus 3 O in the unit cell.
Hope that helps!
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Explanation:
