Answer:
the cause of variation are
- mutation
- random fertilization
- recombination between homologous chromosome
hope it helps.
Answer:
[C] Archaea
Explanation:
Single-Celled and lack a nucleus = prokaryotic organisms (that is, organisms whose cells lack a defined nucleus)
Most extremophiles are single-celled micro-organisms belonging to two domains of life – bacteria and archaea.
[RevyBreeze]
Mitrondia is the power house of cell and ATP energy is produce in mitrondia.
