The two types of of pure substances are elements and compounds.
Green light is least effective
Answer:
In terms of shared derived characteristics, the lophotrochozoan clade have an evolutionary novelty that is unique to it.
In terms of homology, the lophotrochozoan clade are Monophyletic, i.e they are made up of an ancestral species and all of its descendants. All are similar in characteristics resulting from a shared ancestry.
In terms of homoplasy, the lophotrochozoan clade have similar area correspondence between the parts or organs of different species acquired as the result of parallel evolution or convergence.
Without enough light, a plant cannot photosynthesize very quickly - even if there is plenty of water and carbon dioxide and a suitable temperature. Increasing the light intensity increases the rate of photosynthesis, until some other factor - a limiting factor - becomes in short supply.
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