What can be used in astronomy to estimate the surface temperature of a star?

Astronomers measure the temperatures of the surfaces of stars by making a comparison of their spectra to the spectrum of a black body, and black body is the one that absorbs all the radiation strike on it. Temperature of black body is known and hence surface temperature can be found.

The question to your answer is illinois amigo

Mexico has a host of environmental problems, including significant chemicalpollution  from factory discharges and waste dumping, but the main threat to itsbiodiversity  probably stems from  deforestation  and other natural habitat losses. forest habitat is lost for a number of reasons