Which of the following statements about the threshold frequency is correct? a. Threshold frequency is the same for all metals.
b. Threshold frequency depends on the intensity of the incident radiation.
Threshold frequency depends on the frequency of the incident photon.
d. Threshold frequency depends on the work function of a metal.
c.

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How are the reproductive cycles of a fungus and a pteridophyte similar? a)both organisms form fruiting bodies that produce diploid seeds. b)both organisms produce haploid spores and exhibit diploid and haploid stages. c)both organisms reproduce sexually when two haploid hyphae fuse. d)both organisms exhibit a diploid stage and are only able to reproduce asexually.

About how many years does it take for one cycle of surface water to become deep water and then surface water again in the oceans? 101001,000