If cave salamander didn’t evolve from sighted ancestors, it eyes would be a vestigial structure.
Cave salamanders live in the zone, with complete lack of light (dark zone), so this organisms adapted to that environment with blindness. It is believed that cave salamanders evolved from the ones that could see. The explanation of why they lost their sight is that they conserved energy needed to maintain sight to be more successful in reproduction.
Answer:
1.its microscopic and it is the building block to every organism
2. unicellular means 1 cell or type of cell
3. Multicellular means multiple cells or types of cells
4. prokaryotic, eukaryotic?
Answer:They must be careful not to kill their host
Explanation:
As parasites cannot survive without a host, they must have evolved to be non-lethal, this is why parasites aren’t too much of a worry, if they killed their host they wouldn’t thrive.
It go's directly to the brain.......... :) ;)
