I THINK 0.01...i think meaning im not 100% sure but i hope this helps
Density, because the core is made of metals like iron and nickel
The appropriate choice for the non-event is ...
... A. The costs of sewing machines began to increase.
_____
Interchangeable parts generally reduce costs and increase demand (and production).
Characteristics of a rejuvenated river include water that flows rapidly with sloping sides that create steep cuts on the valley floor.