When two or more atoms are combined it is called a ?

Elements can be chemically combined into compounds, therefore, a compound consists of two or more elements combined, in definite proportions, by chemical means. Compounds may be formed by combining atoms of their constituent elements by ionic bonds or by covalent bonds.

Independent variable (IV): Type of flowers

Dependent variable (DV): Growth of flowers

Constants: the same amount of sunlight, same amount of water

Control group: Four flowers were tested. Hydrangeas, roses, daisies, and tulips.

Explanation:

Dependent variable is the variable that is being measured in the experiment.

Constants or control variable is the variable that the experimenter keeps constant or unchanged throughout the experiment.

Idk if this is the answer fully. I only put the constants and variables.