During phototropism, the plant hormone auxin<span> controls cell elongation.</span>
        
                    
             
        
        
        
Answer:
B) sympathetic nervous system
Explanation:
The sympathetic nervous system controls the way the body quick involuntary response to harmful or stressful situations. A rush in hormones rapidly occur to quicken the body's alertness and heart rate to release extra blood to the muscles
It's route of Expression starts with the amygdala sending a distress signal to the hypothalamus which sends activation signals to the sympathetic nervous system via the autonomic nerves to the adrenal glands which help pump the hormone epinephrine (also known as adrenaline) into the bloodstream.
 
        
             
        
        
        
The energy for ATP synthesis comes from organic molecules (such as carbohydrates), or from sunlight, or from inorganic electron donors. We can classify organisms according to their source of energy and organic carbon:
<span><span>heterotrophs – get energy and organic carbon from metabolism of pre-existing organic compounds (food)</span><span>photoautotrophs – use energy from sunlight to make ATP and their own organic carbon compounds from carbon dioxide chemoautotrophs</span><span> – use energy from inorganic chemicals to make ATP and their own organic carbon compounds from carbon dioxide</span></span>
Metabolic pathways carry out reactions that capture energy from these various sources (organic compounds, sunlight or chemicals) and couple them to synthesis of ATP from ADP.
 
        
                    
             
        
        
        
Answer:
At 100°C, the water is present in two states: Liquid and gases.
At this temperature, the water molecules get converted into vapor state. The energy of the vapor or steam particles is more than the water molecules although they are present at the same temperature because of the presence of Latent heat of vaporization.
Latent heat of vaporization is defined as the amount of energy required to convert a liquid into gas at constant temperature and pressure. This energy is hidden in the physical process.
Because of this heat, the particles of steam have more energy than water at same temperature.
particles in steam at hundred degree Celsius and 373 degree Kelvin will have more energy than the water at same temperature because the steam would have observed the latent heat of vaporization which is equal to 540 calories
 
        
             
        
        
        
According to the stability-diversity hypothesis, tropical rain forests are stable communities because they have high species richness. Thus, the correct option is A. 
<h3>What is Species richness?</h3>
Species richness may be defined as a count of the number of species living in a community at a particular time. 
The tropical rainforest has a stable climate with moderate rainfall. So, species richness and diversity have been found in this biome. 
Therefore, the correct option for this question is A. 
To learn more about Species, refer to the link:
brainly.com/question/1542287
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