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?

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#Question id: 12187

#Unit 2. Cellular Organization

How cells know whether sister kinetochores are properly attached to the mitotic spindle?

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#Question id: 12602

#Unit 10. Ecological Principles

Aquatic primary productivity is most limited by which of the following?

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#Question id: 20844

#Unit 12. Applied Biology

Nitrate is energetically the best electron acceptor under which type of conditions

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#Question id: 311

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following has no contribution to the stability of tRNA?

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#Question id: 10486

#Unit 6. System Physiology – Plant

A patch clamp study shows a guard cell protoplast treated in the dark with the fungal toxin fusicoccin which is a well-characterized,