Functional groups attach themselves to the skeleton of the hydrocarbon. how are they related to hydrocarbons?

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

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms

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.

sound moves fastest in solids because the molecules are tightly packed and it allows sound to vibrate