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 system? (1 point) * sunlight water 20 days bean plants

Explanation:

En este experimento, se está estudiando el crecimiento de plantas de habichuela. El sistema del experimento es lo que se está manipulando y observando. Las plantas de habichuela son lo central del estudio para determinar el efecto del fertilizante. La luz solar, el agua y los 20 días son factores de control o tiempo de experimentación, no el sistema en sí.

Answer:

D. Bean plants