The first organisms were
chemoautotrophs
chemoheterotrophs
autotrophs
eukaryotes
Genetic drift operates in
small isolated population
large isolated population
fast reproductive population
slow reproductive population
Evolution is
progressive development of race
history and development of race along with variations
history of race
development of race
Correct order is
Palaeozoic → Archaeozoic → Coenozoic
Archaeozoic → Palaeozoic → Proterozoic
Palaeozoic → Mesozoic → Coenozoic
Mesozoic → Archaeozoic → Proterozoic
