What is a zygote? help plz also heres a meme

Ascientist wants to determine the effect of a new type of gasoline. he fillsone car with normal gasoline and another identical car with the new gasoline.which is the control group? a. the new type of gasolineb. the car with the normal gasolinec. the car with the new gasolinethe amount of gasoline usedd. the amount of gasoline used

You can tell from this karyotype that the individual is female because the karyotype has two chromosomes labeled

How does the carbon cycle involve an exchange of carbon