Two students were testing the amount of fertilizer that would best promote the growth

Question

of strawberries in a garden. Which of the following could be an unavoidable source of experimental error?
A. length of the study
B. variation in the strawberry plants
C. the cost of watering the plants
D. fertilization during the study

Answer 1

B. is the only one that make sense to me.

Answer 2

*makes

Answer 3

A student is studying the effect of fertilizer on fruit growth. He uses 6 tomato plants, placing each in a garden where they get equal amounts of sun and water. One plant is given no fertilizer, while the other 5 plants are given 5, 10, 15, 20, and 25 grams of dissolved fertilizer each day for 3 weeks. At the end of the experiment the tomato fruits are weighed.

What is the dependent variable in this experiment?

A. amount of fertilizer

B. sun exposure

C. fruit weight

D. amount of water

Answer 4

c.fruit weight
b.amount of water
a.gravity
c.the stem moves toward the light for better photosynthesis
100%

Answer 5

Its DDBA

Answer 6

thx random is 100% correct (^///^)(●'◡'●):-P