Which of the following descriptions applies only to Groups? Select all that apply. Information about the element can be obtained from it.
Rows 1-7 on the periodic table
Elements have the same number of valence electrons
Elements have the same number of energy levels
Elements change from reactive metal to unreactive nonmetal
Columns 1-18 on periodic table
Elements have similar characteristics
Every element is in one

Elements have the same number of valence electrons

tsd is temerature dependent sex determination.

tsd: it is a type of environmental sex determination in which the temperature experienced during embryonic/ larval development (ambient temperature for development) determine the sex of the offspring.

crocodile displays the tsd where the ambient temperature of the developing egg determines the individual's sex. for example in the american alligator's eggs, incubation at 33 ºc produces mostly males, while incubation at 30 ºc produces mostly females. so if the american alligator's egg will get the ambient temperature (33 degree celcius)during embryonic development from egg, the offspring will be male and same for the female sex determination.

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