Which of the following can be used to determine the composition of a star?

a. blackbody spectrum

b. the star’s magnetic
field

c. line spectra

d. light from sunspots

The intervention of extraterrestrials has been used to explain the bermuda triangle, a region of the atlantic ocean where ships and planes are frequently lost, leaving no evidence behind. how would this explanation best be characterized?

How is the national wildlife refuge system similar to the pacific region coastal program? a. both programs are concerned with providing habitats for wildlife b. both programs are primarily concerned with preserving fish species c. both programs have set aside 150 million acres of land d. both programs are under the u.s. fish and wildlife service

Which units ate used to measure both velocity and speed? check all that apply