The microscope antoine van leeuwenhoek discover "little animalcules" which were really the first descriptions of microscopic items such as: a. bacteria b. all of the above c. red blood cells d. protozoa and algae

What are chlorofluorocarbons made of

Which statement about inheritance is true? o girls get most of their traits from their moms, boys get most of their traits from their dads. o male offspring will always have an x-linked genetic disease if the mom is a carrier o fathers always determine the gender of the offspring in humans. o males never have y chromosomes.

What causes temperature extremes in the desert