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Crossword Puzzle
Crossword Puzzle

2.1 Theories about origin of life

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2.1 Theories about origin of life

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About this activity

Concepts about the 4 theories of the origin of life.

Created by

Jorge Arizpe
Jorge Arizpe
Mexico

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2.1 Theories about origin of life
 

Crossword Puzzle

2.1 Theories about origin of lifeOnline version

Concepts about the 4 theories of the origin of life.

by Jorge Arizpe
1

The chemosynthetic theory assumes that the compounds and inorganic elements of the primitive earth reacted to each other thanks to heat and ________________ rays.

2

Theory that explains the origin of life as a product of the creation of a superior being.

3

The theory of _________ generation assumes that life originates naturally from inanimate (lifeless) matter, without the intervention of a superior being.

4

The theory of ________ proposes that life came to earth from outer space

5

Louis ________ showed that the theory of spontaneous generation is false with his experiments with swan neck flasks.

6

The chemosynthetic theory was proposed by Alexander ________

7

Scientists Stanley ______ and Harold Urey carried out an experiment in 1952 that synthesized biological precursors.

8

The primitive atmosphere did not contain _______in its gas mixture.

9

Spontaneous generation proposes how complex beings can arise spontaneously, such as: _________ (starts with W), cockroaches or mice.

10

Francesco _______ performed a famous experiment with pieces of meat and glass jars.

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