Which of the following best compares gymnosperms and pteridophytes? a- they both produce seeds, but gymnosperms produce flowers and fruit, while pteridophytes do not. b- they are both vascular plants, but gymnosperms produce cones and pteridophytes produce seeds. c- they are both vascular plants, but gymnosperms produce seeds and pteridophytes do not. d- they both produce seeds, but gymnosperms are vascular and pteridophytes are nonvascular.

C-

The best comparison for gymnosperms and pteridophytes are: both are vascular plants but only gymnosperms produce seeds while the pteridophytes do not, instead they reproduce via spores.

i think it is dna, i'm not totally sure but i think it might be.

one part of the electromagnetic spectrum that arrives on earth as solar radiation from the sun is the visible spectrum. wavelengths of the visible spectrum combine to form what we refer to as

answer - d) ultraviolet radiation.

violet /   380–450 nm / 668–789 thz

violet is number 1 in the chart of visible light.