is the distance between corresponding points of adjacent waves

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In which specialized organ of the plant would these cells most likely be found

The following image is of a diatom. it lives in water and gets food from photosynthesis. it is encased in a hard shell made of something similar to glass or sand . a diatom is a(n) because it has a) multi-celled organism; specialized parts. b) vertebrate; a skeleton. c) insect; an exoskeleton. d) single-called organism; only one cell.

You see a white marker with an orange circle and black lettering. what does this marker tell you