An animal that is cryptically coloured probably

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#Question id: 12375

#Section 1: Ecology

When lichens grow on bare rock, they may eventually accumulate enough organic material around them to supply the foothold for later rooted vegetation. These early pioneering lichens can be said to do what to the later arrivals?

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#Question id: 12376

#Section 1: Ecology

All of the following may be considered as sites for secondary succession EXCEPT

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#Question id: 12377

#Section 1: Ecology

The pattern of gap formation may influence species diversity.

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#Question id: 12378

#Section 1: Ecology

Primary succession is occurring.

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#Question id: 4564

#Section 2: Evolution

Who would have proposed that the boundaries between each stratum mark the occurrence of different localized floods?

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#Question id: 4565

#Section 2: Evolution

Darwinʹs mechanism of natural selection required long time spans in order to modify species. From whom did Darwin get the concept of Earthʹs ancient age?