It helps with communication which is very important
Answer:

<em>Light of wavelength 550 nm is least effective at promoting photosynthesis.</em>
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<em>-</em><em>-</em><em>></em><em> </em><em><u>L</u></em><u><em>ight</em><em> intensity</em></u><em><u>:</u></em><em><u>-</u></em>
<em>Without enough light, a plant cannot photosynthesise 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.</em>
Explanation:
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FUCOS ON STUDY.
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Answer:
b. an emotion antecedent
Explanation:
Emotion antecedents refer to the events or situations that trigger an emotion. They are also known as emotion triggers. Research suggests that the underlying psychological themes that elicit emotions are the same across cultures, but that the specific content of the events can be different across cultures.