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: 20715

#12. Applied Biology

Under anaerobic conditions microbial electron transfer and respiration can proceed only if

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#Question id: 3286

#11. Evolution and Behavior

 In a human population, the gene frequencies of the alleles for the ABO system are as follows:

A = 29%                         B = 7%                                    0=64%

Assuming complete random mating and Hardy-Weinberg equilibrium,

What are the blood type A frequencies in this population?

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#Question id: 1024

#4. Cell Communication and Cell Signaling

The cell wall of Gram-positive bacteria

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#Question id: 15706

#12. Applied Biology

Growth regulators which cause cell division, cell differentiation, shoot differentiation

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#Question id: 5357

#8. Inheritance Biology

This pedigree shows the inheritance of a recessive trait in humans. Individuals that have the trait are homozygous for a recessive allele a. If H and I, who happen to be first cousins, marry and have a child, what is the chance that this child will have the recessive trait?