1: The earliest geological time period among the organism

1. Cambrian 
2. Precambrian
3. All of these

2: First organism evolved on the earth surface are

1. Autotrophs
2. Chemoautotrophs
3. Heterotrophs

3: There is no life or earth on the moon due to absence of

1. Temperature
2. Light
3. Water

4: The following was absent in primitive atmosphere of earth

1. H₂
2. O₂
3. N₂

5: Urey and miler in the experiment used a mixture of gases corresponding

1. C₃h₂co₂     
2. Ch₄.,NH₃,H₂O
3. Ch₄,NH₃,H₂

5: Earth crust become stable by

1. 3.9bya
2. 3.7bya
3. 3.6bya

6: The force that initiate evolution is

1. Variation
2. Mutation
3. Adaptation

7: Who proposed the bigbang theory first time?

1. Lemarite
2. Wiseman

8: Earth and other planets of solar system formed about year ago

1. 4.4billion
2. 4.4million
3. 4.6million

9: The earliest evidence of life on the earth causes form fossil of microorganisms that are about

1. 4.5 million
2. 5.5 million
3. 3.5 million

10: Scientist in 1920 hypothesis the earth atmosphere was environment

1. Reducing
2. Non fourable
3. Fourable

11: The earth like other planted formed form 

1. aggregated of uranium
2. Cloud of gases
3. Collision of meteorites

12: When dinosaurs die off?

1. 105.1 million
2. 7.55 million
3. 6.55 million

13: How thick the curst of earth 

1. 4miles
2. 4 km
3. 40 km

14: DNA is the genetic material bur it requires to replicate

1. RNA
2. Lipids
3. Protein

15: Turing co₂ into organic molecules

1. H
2. He
3. C

16: stromilates are

1. 2.5bya
2. 2.6 bya
3. 2.7bya

17: first evidence of eukaryotic

1. ~1.4 BYA
2. ~1.6bya
3. ~1.55bya

18: fossils form

1. Warmoona
2. Dolphin
3. Shark

19: The first formed organism on earth used only for catalyzed

1. RNA
2. DNA
3. Ozone

20: DNA requires

1. RNA primer
2. Protein synthesis
3. Transcription