What's caused the ratio of floating algae levels to increase around 1750?

The structure of a dna molecule is best described as a. one long strand of nucleic acids b. two strands of dna nucleotides joined by hydrogen bonds c. two strands of amino acids joined by hydrogen bonds d. one long strand of amino acids

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

What’s a example of extrusive rock that cooled to quickly for grains to form