Question

Joshua investigates the effect of varying amounts of sunlight on the rate of plant growth. He experiments by exposing seedlings to different amounts of sunlight each day. He stops the experiment when each seedling reaches 20 cm in height. Which variable does Joshua control in the experiment?

Answer 1

Respuesta:

Gracias por los puntos Gia!

Explicación:

Saludos, Fernando B. (El del Colegio Americano)

PD: No te respondi bien porque yo tampoco se :|)