Levi decides to examine the effect of fertilizer on the growth of tomato plants. he chooses four plants for his experiment and applies varying amounts of fertilizer to three of them. he does not apply fertilizer to one plant. over a 15-day period, the plants receive fertilizer on days 1, 4, 7, 10, and 13. levi measures the height of all of his plants with a meterstick on days 3, 6, 9, 12, and 15. he also makes sure to hold all experimental factors constant except for the fertilizer. what is the independent variable in levi's experiment on tomato plants?

Which of the following best summarizes the idea represented by this graph?

Isaiah is a citizen of florida. he would like to propose a new amendment to his state's constitution to be voted on in the next election. is isaiah able to do this? no. the u.s. and florida constitutions do not allow citizens to add amendments to the state or federal ballot. no. the florida constitution says citizens may only propose new laws or amendments at local government meetings. yes. the florida and u.s. constitutions allow citizens to add amendments to be voted on in the next federal election. yes. the florida constitution allows citizens to propose amendments to the state constitution to be voted on in the next state election.

How long was it from the time african american men were given the right to vote until women were given the right to vote?