Question

1. the situation below is for questions #7 - 10. john and his lab group decided to test the effect of fertilizer on plant growth. two bean plants were grown for 20 days. plant a received 10 grams of fertilizer, and plant b received no fertilizer. both plants received the same amount of sunlight and water each day. at the end of 20 days, the students recorded the height of the plants in centimeters. what is the independent variable? (1 point) * amount of sunlight amount of water number of days the plants grow amount of fertilizer

Explanation:

En un experimento, la variable independiente es aquella que el investigador manipula. Aquí, se manipula la cantidad de fertilizante que reciben las plantas. La cantidad de luz solar, agua y el número de días son factores controlados.

Answer:

D. Cantidad de fertilizante