# PTE Re-order #33: Meteorite Impacts and...

Re-order Paragraphs #33 - Level 3 - Feeds Reading

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- Impacts by meteorites represent one mechanism that could cause global catastrophes and seriously influence the evolution of life all over the planet.
- According to some estimates, most species extinctions may be due to such impacts.
- Such a perspective fundamentally changes our view of biological evolution.
- The standard criterion for the survival of a species is its success in competing with other species and adapting to slowly changing environments.
- Yet an equally important criterion is the ability of a species to survive random global ecological catastrophes due to impacts.

## Answer

1. Impacts by meteorites represent one mechanism that could cause global catastrophes and seriously influence the evolution of life all over the planet.
2. According to some estimates, most species extinctions may be due to such impacts.
3. Such a perspective fundamentally changes our view of biological evolution.
4. The standard criterion for the survival of a species is its success in competing with other species and adapting to slowly changing environments.
5. Yet an equally important criterion is the ability of a species to survive random global ecological catastrophes due to impacts.

## Explanation

The sequence correctly establishes the cause (meteorite impacts), its immediate consequence (extinctions), the resulting paradigm shift in evolutionary biology, and finally, the comparison between two distinct survival criteria.

(Sentence 1): The first sentence introduces the significant role of meteorite impacts in global catastrophes and their potential effect on the evolution of life, setting the context for discussion. (Sentence 2): The second sentence supports the introduction by suggesting that many species extinctions may be linked to these impacts, emphasizing their importance. (Sentence 3): The third sentence expands on how this understanding shifts our view of biological evolution, connecting extinction events to evolutionary processes. (Sentence 4): The fourth sentence presents the traditional view of species survival, outlining the standard criteria based on competition and adaptation. (Sentence 5): Finally, the fifth sentence introduces the need to consider random ecological catastrophes as a crucial survival criterion, concluding the discussion on survival factors.

## Hints

- Start by finding the sentence that introduces the primary topic of meteorite impacts.
- Look for transition words like 'Yet' or 'Such' to link sentences that contrast or expand on previous ideas.

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