How did scientists first discover exoplanets (those outside our solar
system)?
O
Pictures of the planets using very strong telescopes
O
Doppler shift of stellar spectral lines
O
gravitational inferometry
O
gravitational lensing

hi,

the answer is d, it has indefinite shape but definite volume.

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water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.