Answer:
 Yes, the biotechnology are associated with the genetic engineering as, the genetic engineering are the direct modification or manipulation of the organism which are using the biotechnology. 
Basically, it the set of technologies which are used to modify the genetic cells including the transferring of the genes across the boundary to produced the organism. And with the help of biotechnology, new DNA are obtain by copy the genetic material by using the methods of DNA.
 
        
             
        
        
        
 WATER
Solids will usually sink when placed in their own liquids with the exception of water 
Explanation:
Ice (the solid form of water) floats on water that is cooler than 4 degrees centigrade. This is unlike any other material and this phenomenon has been referred to as the ‘water anomaly’. 
Most substances will sink in their own liquid because the solid form is denser than the amount of their own liquid that they displace when immersed. This is because the particles in the solid are closely packed together hence there are more particles per volume than in the liquid form.  
Water however, expands at temperatures below 4 degrees and hence ice is less dense than water at 4 degrees and below. The particles in ice are farther apart than particles of water at 4 degrees and below. There is, therefore, more particles per volume in the liquid form of water than in ice – making ice less dense. 
Learn More:
For more on 'water anomaly' check out;
brainly.com/question/871737
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Skin remains red after a bad sun burn because:
inflammation causes increased blood flow.
Explanation:
When our skin is exposed to sun rays , the epidermal layer starts getting damaged. The damage to the cell caused by  sun rays triggers the  melanin secretion. Increased secretion of melanin results in darkening of the exposed region .
However, the damage and inflammation to the skin increases blood flow to the skin, this causes reddening of the skin.
 
        
             
        
        
        
Objects stop emitting radiation only at 0 K, but objects may not reach 0 K, ever. Thus, no object would ever stop emitting radiation.
 
        
                    
             
        
        
        
Because of the presence of both activation and inactivation gates, voltage-gated Na channels can be all of these.
- Sodium voltage-gated channels can be either closed, open, or inactive. 
- Voltage-gated sodium channels are closed when at rest. Both an activation gate and an inactivation gate are present in voltage-gated sodium channels. 
- Although the inactivation gate is open, the activation gate is closed. This conformation is closed but capable of opening. Some of the activation gates open as a result of membrane depolarization brought on by a stimulus. 
- Both the activation and inactivation gates will be opened at this point. As sodium ions enter the cells, nearby activation gates will open. 
- A greater amount of sodium will enter the cells as a result, initiating an action potential.
- Both gates open when certain depolarization thresholds are reached. Action potential increases to its maximum as sodium rushes into the cell. 
- The inactivation gate will gradually close and the permeability of the membrane to sodium ions will decrease. The channel is now in a state known as "closed but not capable of opening." 
- Up until the membrane potential reaches its resting state, this occurs. The channels once more assume the "closed but capable of opening" conformation when resting values are attained.
learn more about  Na channels here: brainly.com/question/12977601
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