J'ai besoin d'aide pour ce dm en svt

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

How did alexander fleming’s research solve a societal problem? he developed ways to treat inherited diseases. he advocated for regular hand washing to kill germs. he discovered a new type of medicine that could treat infections. he discovered the cause of mad cow disease, an emerging disease.

What part of the cell does 9 represent? a. cytoplasm b. lysosome c. ribosome d. centrosome