Electron affinity: The enthalpy change that results from adding an electron to a gaseous atom.

Electron affinity is becoming less negative (less exothermic) and less likely to gain an electron. 

TLS Online TPP Program

#Id: 10723

#XL - R Botany

III. Underground Stem modification

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#Id: 9732

#XL - R Botany

One plant produced sesquiterpene, (E)‐β‐farnesene (EBF), has been considered a potential defense against aphids, since its emission by plants causes aphids to drop off the plant or depart from the feeding site. 

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#Id: 9393

#XL - T Zoology

Hygienic behaviour in honeybee (Inherited)

uu ‐ Uncapping  

rr‐ Cleaning

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#Id: 9182

#XL - T Zoology

Selection coefficient

A related variable is the selection coefficient (s), which is the relative intensity of selection against a  genotype

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#Id: 7763

#XL - Q Biochemistry

Breaking a bond always require energy to be added to the molecule. Correspondingly, making a bond always releases energy.