Question

Ruby has observed that plants in her garden vary in height. She wants to investigate whether a plant species (species A) grows faster than the other garden species (species B, C, and D). Select the statement that describes Ruby gathering enough evidence to support a scientific explanation concerning plant growth rates.

a. Ruby measures the heights of several species A, B, C, and D plants for a week under different conditions and finds a journal article that describes the growth rate of species A.
b. Ruby measures the height of a species A plant for a week and finds an anonymous gardening blog that describes the growth rate of species A.
c. Ruby measures the heights of several species A, B, C, and D plants for a week under the same conditions.
d. Ruby measures the heights of several species A, B, C, and D plants for a week under the same conditions and finds journal articles that describe the growth rates of each species.

Answer 1

Pretty sure the answer is D

A. and B. wouldn’t give accurate results

C. would give accurate results but no evidence

D. Would give her accurate results and evidence because she found (probably credible) journal articles :-)

Hope this helped!