________ is a supermassive black hole sitting in the galactic center of the Milky Way
A) Messier 31 B) Centaurus A C) The Orion Spur D) Sagittarius A*
D
You might also like to view...
Hazardous waste is anything that
A. Is toxic, carcinogenic, mutagenic, corrosive, or explosive B. Causes human health threats C. Has the potential of causing health problems D. Severely contaminates the environment E. All of these are correct
Any pyroclastic particle that is 2 to 64 mm in diameter and is consisting of frozen lava clots, pumice fragments, or ash clumps can be called:
a. volcano relict b. volcano bomb c. volcano ash d. lapilli
The movement of water within a wave travels ____
A)with the wave B)in a circular path at and just below the water surface C)in a circular path at a depth of one-half the wavelength D)in both a longitudinal and circular path E)in an up and down motion to a depth of one-half the wavelength
A catalyst speeds up a chemical reaction as a result of which of the following?
A) It increases the number of collisions between reacting molecules. B) It makes the reaction more endothermic. C) It makes the reaction more exothermic. D) It provides an alternative reaction pathway.