I believe the 3 main parts that make a virus would be its Nucleic content - DNA and or RNA, A protein coat surrounding the nucleic acid called a capsid, and the tail used for injecting viral genome into the host cell.
A terminal moraine, also called end moraine, is a type of moraine that forms at edge of a glacier. The moraine is left as the marking point of the terminal extent of the ice. Hope this helps. c;
Im confused about the question can you explain
It would be “c” ; nitrogen fixation
Proteins in a protein complex are linked by non - covalent protein - protein interactions. The process of complex formation comprises of steps namely : ... An encounter complex is formed that either proceeds towards final complex or dissociates again.