Which is an important principle to follow when studying climates? a. plants that need certain conditions to thrive today needed those same basic conditions in the past. b. the weather on any given day can provide all the necessary information to determine the climate of a region. c. climates can only exist in areas where human development is minimal. d. climates will always slowly change over time.

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o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.