D Ten pea plants were used to study the effect of fertilizer on plant growth. All ten pea
plants were the same height at the beginning of the investigation and placed in th
same type of soil. Each plant was also given the same amount of water and
sunlight. Five of the pea plants were given 0.5 grams of dry fertilizer every day while
the other five pea plants were given 1.0 ml of liquid fertilizer every day. What is a
possible source of error in this experiment?
A There is no dependent variable present.
B There is no control group present.
C There is no experimental group present.
D. The plants were not examined daily
Your answer