Ecology
Ecology studies the life of living things and their environment. 
 
        
                    
             
        
        
        
The reaction of a particular endothermic reaction whether in a negative or positive entropy change is always spontaneous. Temperature differences will be spontaneous throughout the reaction but one thing is constant, heat will always be produced within the said reaction.
        
             
        
        
        
Answer:
C or D 
Explanation:
but idk, i only know that eukaryas have membranes around nucleus and the other one doesn't
 
        
                    
             
        
        
        
Answer:
Chlorophyll 
Explanation:
Most plants contain a special colored chemical or pigment called chlorophyll that is used in photosynthesis. Chlorophyll is what absorbs the sun's energy and turns it into chemical energy.
Request: Please mark me as the Brainliest. 
 
        
             
        
        
        
The relative balance within an optimal range also known as homeostasis