A hypothesis can be define as the predicted statement for a particular event or phenomena which includes some facts based on limited evidences obtain from observations. A hypothesis can be tested on the basis of experimental procedures.
The given statement is hypothesis, this is because of the fact that it is based on observation of clean and polluted water influencing the life of fish. This statement can be proved true or false based on experimental procedures.
The three main components of dna molecule are phosphate, a sugar called deoxyribose, and four nitrogenous bases—adenine, guanine, cytosine, and thymine.
