How did the first photosynthetic organisms help turn Earth's early environment from anaerobic to aerobic?​

a client has been prescribed misoprostol for the treatment of peptic ulcer disease. what is a true contraindication for this medication

Awater molecule is polar because there is an uneven distribution of these between the oxygen and hydrogen atoms.

Select all that apply genes are specific nucleotide sequences occur in numbers that are the same as the number of chromosomes are located in a specific place on a chromosome determine the traits of an organism are units of rna