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