Nurturing Life Sciences
#Id: 9792
#Id: 7044
#XL - T Zoology
Orthogenesis - “Straight-line evolution,” held that the variation that arises is directed toward fixed goals.
#Id: 9281
#XL - S Microbiology
#Id: 7766
#XL - Q Biochemistry
#Id: 8875
#XL - R Botany
#Id: 7750
The greater the effective nuclear charge the more tightly an electron is held in by the nucleus because there is less electron shield between the valence electrons and the nucleus, and so, the smaller the radius.