Which instrument, along with a telescope, allows study of the wavelengths of visible light coming from a star? a nuclear reactor

a spectrograph

a shortwave radio set

a solar flare

The answer is d the box plots show the data distributions for the number of customers who used a coupon each hour during a two-day sale. which measure of variability can be compared using the box plots? interquartile range standard deviation mean median

Suggest two reasons why irrigation is important for human development of the desert (4 marks)

The vegetation that thrives in the tundra is limited to a. mosses, barley, wheat, and corn. b. coniferous trees. c. dwarf shrubs, mosses, lichen, potatoes, and beans. d. mosses, lichen, algae, and dwarf shrubs.