Two barnacles, Balanus and Chthamalus, can both survive on the lower rocks just above the low-tide line on the Scottish coast, but only Balanus actually does so, with Chthamalus adopting a higher zone. Which of the following best accounts for this niche separation?

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#Question id: 3647

#3. Fundamental Processes

In the cell cycle: there are four main phases, G1, S, G2 and M phase. S phase is the :

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#Question id: 3035

#2. Cellular Organization

The equation used to obtain bacterial population by binary fission is

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#Question id: 9252

#9. Diversity of Life Forms

Which of these environmental factor(s) is/are the key determining factor(s) that control(s) the biotic structure of aquatic biomes?

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#Question id: 3291

#11. Evolution and Behavior

Which of the following is the most predictable outcome of increased gene flow between two populations?

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#Question id: 8920

#9. Diversity of Life Forms

Almost all of the major animal body plans seen today appeared in the fossil record over 500 million years ago at the beginning of the