Which statement best describes the role of the nucleus in a cell? The gate at a factory keeps out unwanted cars.
The elevator at a factory moves materials around the building.
The boss at a factory gives out orders and directions.
The boxes at a factory are used to ship materials to customers.

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.

idk and i also need to know where are those bio brainy acts lol