Five Hypotheses Explain How Species Richness Affects Community Services, Following statement are given

A) Community services decline with decreased species richness in a stepwise fashion.

B) Species that play the same roles in a community can compensate for each other if some are lost under particular conditions

C) Species richness declines even slightly from its natural levels, community services are reduced immediately

D) Community services change as the number of species increases or decreases, but that the direction of change is not predictable.

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#Question id: 23467

#General Aptitude

Statement— Should high chimneys be installed in industries?

Arguments—

I) Yes. It reduces pollution at ground level.

II) No. It increases pollution in upper atmosphere.

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#Question id: 5256

#Unit 8. Inheritance Biology

If the experimental population of E. coli lacks an F factor or F plasmid, and if bacteriophage are excluded from the bacterial cultures, then which of these is a means by which beneficial mutations might be transmitted horizontally to other E. coli cells?

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#Question id: 21394

#Unit 12. Applied Biology

Which one of the following catalyze biological reactions?

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#Question id: 19332

#Unit 12. Applied Biology

Which one of the following transducers is a self-generating type transducer?

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#Question id: 11297

#Unit 10. Ecological Principles

What is the difference between gross and net primary production?