What country has more coal reserves than any in the world?

a: russia
b: saudi arabia
c: mexico
d: united states

According to the cell theory, which describes cells? a. all organisms are composed of multiple cells. b. all cells have the same structure and function. c. cells are found in everything on earth. d. living organisms are not created spontaneously

Interferons play a vital role in the immune system why are interferons so important?

Which if the following best describes why invertebrates isn’t considered a scientifically valid word when classifying animals