The main way astronomers determine the physical and chemical properties of an object in the distant universe is through

a) photography

b) spectroscopy

c) astrometry

direct measurement

d direct measurement

What first caused people to consider that the continents were once one large landmass?

Given f(x) = 3x= 1 and g(x) = 2x-3, for which value of x does g(x)= f(2)? its for algebra

What did the native title act do? a. it recognized and protected aboriginal rights to land. b. it stated that aborigines were to be counted as part of the census. c. it established aboriginal languages as official. d. it granted aborigines suffrage.