The seasons are caused as the Earth, tilted on its axis, travels in a loop around the Sun each year. Summer happens in the hemisphere tilted towards the Sun, and winter happens in the hemisphere tilted away from the Sun. As the Earth travels around the Sun, the hemisphere that is tilted towards or away from the Sun changes.
 
        
             
        
        
        
Answer:
The correct answer is a. sugar
Explanation:
Even though caffeine is also known for uprising the energy levels to a point where it could cause insomnia, the excess of sugar usually causes an increase in heart rate and insomnia. Also, coca-cola has a bigger amount of sugar than caffeine, so it explains how these high quantities could affect Xi's health. 
 
        
             
        
        
        
Answer:
I believe it's c I could be wrong but I'm pretty sure
 
        
                    
             
        
        
        
A prolonged period of photorespiration would affect a plant, giving a significant evolutionary advantage to plant species in dry climates.
<h3>What is the difference between photorespiration and respiration?</h3>
One of the basic differences between photorespiration and respiration concerns the effect of O2 on the two processes. Respiration saturates when O2 reaches approximately 2%, while photorespiration does not reach saturation in a pure O2 atmosphere.
<h3>Under what conditions does photorespiration occur?</h3>
Photorespiration is an expensive metabolic pathway that occurs when the Calvin Cycle enzyme rubisco acts on oxygen instead of carbon dioxide.
With this information, we can conclude that A prolonged period of photorespiration would affect a plant, giving a significant evolutionary advantage to plant species in dry climates.
Learn more about photorespiration in brainly.com/question/13433623
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Forssoic science investigate department