The  materials and equipment needed and procedures to follow in an experiment is termed as experiment protocol. It <span> is a predefined written procedural method in the design and implementation of </span>experiments<span>. Hope this answers the question. Have a nice day.</span>
        
             
        
        
        
Option c. endodermis
greek word endon, within + derma,skin; the layer of living cells, with various characteristically thickened walls and no intercellular spaces, which surrounds the vascular tissue of certain plants and occurs nearly all roots and certain stem and leaves.
        
                    
             
        
        
        
Answer: Lipids
Explanation: The ratio of saturated and unsaturated fatty acids (lipids) determines the fluidity in the membrane at cold temperature.
 
        
                    
             
        
        
        
Answer:
The correct answer is true.
Explanation:
Swallowing of food is the process of passing the food from the mouth to the stomach through the way of the throat (pharynx) and esophagus. This process takes place in three stages:  oral, pharyngeal, and esophageal stages  
During the pharyngeal stage, epiglottis which is a leaf-shaped flap of cartilage located at top of the larynx (a muscular organ forming voice box) perform functions in response to the swallowed food as the larynx lift up or rises inside the neck to close the epiglottis while the epiglottis moves downward to cover it, providing more airway protection.
Thus, true is the correct answer.
 
        
             
        
        
        
Answer:
The red light is more advantageous.
Explanation:
 Predators that are producing red light have advantage because they can see their prey but their prey can't see them,since most of them see blue light.
Some also light up their red light to attract mates.