Gonna need a bit more information then that if you want an answer.
        
             
        
        
        
I really hope this helps!
The main dangers worldwide are population growth and resource consumption, climate change and global warming, habitat conversion and urbanisation, invasive alien species, over-exploitation of natural resources and environmental degradation.
        
             
        
        
        
Abiotic Factor-a nonliving condition or thing, as climate or habitat that influences an
 ecosystem and the organisms in <span>it
True</span>
        
             
        
        
        
Internal fertilization is the process when the syngamy (union of male and female gamete) occurs inside the female body after insemination using copulation. In contrast, External fertilization is the syngamy outside the female body, that is in the outer environment especially in water bodies.
        
             
        
        
        
Answer:
the paired bases( nitrogenous bases )