What gave rise to O2?

Microscopic organism no longer extant

How was the ozone layer created?

It occurred in a spontaneous manner

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James Hernandez 10 preguntas

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1Around when did early life arise on Earth?
1. ABetween 3.5 and 2.5 bya
2. B4 bya
3. C3.5 bya
4. D2 bya
5. Ebetween 2 and 2.5 bya
2Was the ancient earths atmosphere highly reducing and very hot?
1. AVerdadero
2. BFalso
3Early life was anaerobic and most likely thermophilic
1. AVerdadero
2. BFalso
4What gave rise to O2?
1. Acyanobacteria
2. BOxidation of iron
3. CMicroscopic organism no longer extant
4. DThermo vents
5How was the ozone layer created?
1. AOxygen reacted with UV
2. BIt occurred in a spontaneous manner
3. COxygen reacted with ozone
4. DDecomposition of cyanobacteria
6What are the components of phylogenetic trees?
1. ARoots
2. Bstems
3. Cleaves
4. Dnodes
5. Ebrances
7Branch length represents the number of changes that have occurred along that branch?
1. AVerdadero
2. BFalso
8The terms monophyletic and polyphyletic can only apply at the genus and species levels
1. AVerdadero
2. BFalso
9Monophyletic groups will always possess the similar phenotypes
1. AVerdadero
2. BFalso
10Early branches indicate that the organism is primitive
1. AVerdadero
2. BFalso

Descripción: Test sobre Microbial evolution and systematics , creado por James Hernandez el 10/04/2021.
Autor: James Hernandez
Idioma: English
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