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.

a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

cells spend most of their time in interphase