Answer:
Both A and B 
Explanation:
Because RNA is single stranded and the DNA has a helix shape
 
        
             
        
        
        
Ecology
is made up of the science of biology. Ecology is a science that deals with the
relationships between groups of living things and their environments. To exist
with one another, organisms belonging to a same species either compete for the
resources or divide it amongst themselves, where animals and plants of the same
species co-exist and creates a beauty with nature.
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The strategies for preserving, or treating the dead body, that the old Egyptians utilized is called Mummification. Utilizing exceptional procedures, the Egyptians expelled all dampness from the body, leaving just a dried shape that would not effortlessly rot. Mummification was polished all through the vast majority of early Egyptian history.
        
             
        
        
        
Answer:
 Archaea 
Explanation:
Most extremophiles are microorganisms (and a high proportion of these are archaea), but this group also includes eukaryotes such as protists (e.g., algae, fungi and protozoa) and multicellular organisms. Archaea is the main group to thrive in extreme environments.