Pea plant clones are giving different amounts of water for three-week period. the first pea plant receives 400 milliliters a day. the second pea plant receives 200 milliliters a day. the third pea plant receives 100 milliliters a day. the fourth pea plant does not receive any extra water: the plant only receives natural ways of receiving water. the heights of the pea plants are recorded daily. which of the following is a constant? a. type of pea plantb. same type of pea plantc. amount of milliliters of extra waterd. plant height

In this case It would depend on the Identify the variable.

It can be Independent, dependent and only controlled

Explanation:

if the answer is:  Independent variable

Amount of water

if the answer is:  Dependent variable

Height

if the answer is:  Controlled variable

Type of plea plant

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds