How could the students improve the validity of the data in this experiment to better support their conclusion? es))
A)
Use only springs made from two different materials.
B)
Repeat the trials several times and take an average.
Test a greater variety of springs, increase sample size.
D)
Use exactly the same mass increments for each spring trial.

How do energy and matter move through an ecosystem? both energy and matter unidirectionally flow through an ecosystem. both energy and matter cycle within an ecosystem. matter unidirectionally flows through an ecosystem, whereas energy cycles within an ecosystem. energy unidirectionally flows through an ecosystem, whereas matter generally cycles within an ecosystem.