D.  mRNA is synthesized from a strand of DNA. 
Transcription, hence the root script, means to write. This is the creation of the mRNA "messenger" information.
        
                    
             
        
        
        
Answer no copy paste 
Homeostasis and thermoregulation
When temperatures are too low, these processes may be disrupted, which can lead to cellular damage and even death. Homoeothermic endotherms, such as bears, bats, and birds, regulate their body temperature by generating heat internally. 
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<span>The discoverers of DNA were not James
D Watson and Francis Crick. They are the first scientist to formulate an
accurate description of the DNA’s (deoxyribonucleic acid) complex ,
double-helical structure. They discovered that base pairing nucleotides must
be; adenine and thymine; and cytosine and guanine. These base pairs are held
together by a hydrogen bond, atype of chemical reaction that s easy to break
and easy to reform. The statement is “DNA
is a double helix made of two strands linked together with hydrogen
bonds.”</span>
        
             
        
        
        
The abiotic environment consists of non-living things. So, rocks, temperature and water are part of the abiotic environment.