One of the main function of the earth’s ozone layer is to ?

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What is it called when the Earth is closest to the sun _____________?

A. Aphelion B. Perihelion C. Apoapsis D. Periapsis...

A term biotype means ___________?

A. all individuals having same phenotype B. all individuals having same genotype C. all individual with different phenotype D. all individuals with different genotype...

Of the total number of genes inherited by a child

more are from the father more are from the mother there are an equal number from each parent there is never a constant number from the parents...

Mass spectrograph was Invented by?

A. Rutherford B. Chadwik C. F.W.Aston D.none...

Which is the second largest component in milk?

A. Fat B. Protein C. Vitamin D. None of thes...