The appropriate choice for the non-event is ...
... A. The costs of sewing machines began to increase.
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Interchangeable parts generally reduce costs and increase demand (and production).
Because the climate can change and get hotter? idk
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Answer:
hey mate here is ur answer
Dark Matter only: detected through its gravitational attraction, has mass, most common form of mass in the halo of the Milky Way Galaxy, likely to consist of subatomic particles
Dark Energy only: inferred to exist from the measured acceleration of the universe's expansion, the proposed source of a universal repulsive force
BOTH: the universe contains more of this than it contains matter made from atoms, we do not know what it is made of
NEITHER: blocks light from stars behind it, "dark" because it emits only infrared light
